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((Short description|Dry lake bed in Death Valley National Park, California, United States))
((Infobox lake
| name            = Racetrack Playa
| image           = Racetrack Playa from space.jpg
| caption         =
| location        = [[Death Valley National Park]]<br>[[Inyo County, California]]
| coords          = ((coord|36.6813|-117.5627|region:US-CA_type:waterbody|display=inline,title))
| lake_type       = [[Endorheic basin]]
| outflow         = [[Evaporation|Terminal (evaporation)]]
| inflow          =
|pushpin_map=California
| basin_countries = [[United States]]
| length          = ((convert|4.5|km|abbr=on))
| width           = ((convert|2|km|abbr=on))
| area            = ((convert|7|km2|abbr=on))
| shore           = ((convert|12|km|abbr=on))
| elevation       = ((convert|1132|m|ft|abbr=on))
| reference       = ((gnis|236219|The Racetrack))
))

The '''Racetrack Playa''', or '''The Racetrack''', is a scenic [[dry lake]] feature with "[[sailing stones]]" that inscribe linear "racetrack" imprints. It is located above the northwestern side of [[Death Valley]], in [[Death Valley National Park]], [[Inyo County, California]], U.S.

==Geography==
Racetrack playa is approximately 3 miles long and 1.2 miles wide and is located at a height of 3708 feet in a north-south valley east of the [[Panamint Range]] within [[Death Valley]] National Park. It receives only 3 inches of annual precipitation and is bounded on all sides by north-south ranges rising 1500 to 2000 feet. The overall drainage area is around 70 square miles, with most of it flowing onto the playa from eastern mountain rivers.<ref name="Stanley-1955" />

The surface of the playa, which is mainly dried clay, provides a hard, smooth, and level pavement. The distribution of stones varies, with some regions a few hundred feet from the shore having 5-10 tiny stones per square yard. There is evidence of downgrade transit in a few places.<ref name="Stanley-1955">((Cite journal |last=Stanley |first=George M. |title=Origin of Playa Stone Tracks, Racetrack Playa, Inyo County, California |date=1955 |url=https://pubs.geoscienceworld.org/gsabulletin/article/66/11/1329-1350/4654 |journal=Geological Society of America Bulletin |language=en |volume=66 |issue=11 |pages=1329 |doi=10.1130/0016-7606(1955)66[1329:OOPSTR]2.0.CO;2 |bibcode=1955GSAB...66.1329S |issn=0016-7606))</ref>

Rocks weighing up to 320 kg travel across Racetrack Playa in northern Death Valley National Park, California, leaving tracks. This phenomenon, which has been documented since 1948, is not unique and has been observed in various playas in southern California, the Tunisian Sahara, and [[South Africa]].<ref name="Jones-2015" />

Traditionally, these rocks were considered to be pushed by wind over a wet and slippery playa surface. Recent observations from 2014 called this assumption into question. Norris et al. observed pebbles being transported as thin sheets of ice melted in 4-5 m/s winds. The ice panels moved several rocks at speeds of up to 80 mm/s.<ref name="Jones-2015" />

While these discoveries give information on the physics, several aspects of the tracks remain a mystery. Kletetschka et al. proposed that when an ice sheet arises, rocks with better thermal conductivity than water or ice could become frozen to the rock's base. This permits the ice sheet to be moved together with the rock and silt by the wind.<ref name="Jones-2015">((cite journal | url=https://www.sciencedirect.com/science/article/abs/pii/S1875963715000713 | doi=10.1016/j.aeolia.2015.08.001 | title=Racetrack Playa: Rocks moved by wind alone | date=2015 | last1=Jones | first1=Ronald | last2=Hooke | first2=Roger LeB. | journal=Aeolian Research | volume=19 | pages=1–3 | bibcode=2015AeoRe..19....1J ))</ref>

A thorough system was put up for the investigation of Racetrack Playa's rock movement, including a weather station near the playa, time-lapse cameras centered on the southeast corner, and 15 GPS-equipped boulders on the surface. The researchers went to the location for maintenance and data retrieval 5-8 times per year. From November to March each year, the time-lapse camera recorded hourly conditions.<ref name="Norris-2014">((cite journal | doi=10.1371/journal.pone.0105948 | doi-access=free | title=Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion | date=2014 | last1=Norris | first1=Richard D. | last2=Norris | first2=James M. | last3=Lorenz | first3=Ralph D. | last4=Ray | first4=Jib | last5=Jackson | first5=Brian | journal=PLOS ONE | volume=9 | issue=8 | pages=e105948 | pmid=25162535 | pmc=4146553 | bibcode=2014PLoSO...9j5948N ))</ref>

Interwoof GPS loggers were installed in [[limestone]] blocks northeast of natural stones and captured GPS and temperature data every 60 minutes. They began recording constantly at one-second intervals after being triggered.<ref name="Norris-2014" />

The Racetrack Playa is ((convert|1132|m|ft|order=flip)) above [[sea level]], and ((convert|2.8|mi|km|abbr=on)) long (north-south) by ((convert|1.3|mi|km|abbr=on)) wide (east-west). The playa is exceptionally flat and level with the northern end being only ((convert|1.5|in|cm)) higher than the southern.  This occurrence is due to major influx of fine-grained sediment that accumulates at the north end.  The highest point surrounding the Racetrack is the ((convert|5678|ft|m|adj=on)) high Ubehebe Peak, rising ((convert|1964|ft|m)) above the lakebed ((convert|0.85|mi|km)) to the west.((Citation needed|date=October 2023))

The [[Dry lake|playa]] is in the small Racetrack Valley [[endorheic basin]] between the [[Cottonwood Mountains (Inyo County)|Cottonwood Mountains]] on the east and [[Nelson Range (California)|Nelson Range]] to the west. During periods of heavy rain, water washes down from the surrounding mountains<ref name="Kletetschka2013">((Cite journal |last1=Kletetschka |first1=Gunther |last2=Hooke |first2=Roger LeB. |last3=Ryan |first3=Andrew |last4=Fercana |first4=George |last5=McKinney |first5=Emerald |last6=Schwebler |first6=Kristopher P. |date= 2013|title=Sliding stones of Racetrack Playa, Death Valley, USA: The roles of rock thermal conductivity and fluctuating water levels |url=https://linkinghub.elsevier.com/retrieve/pii/S0169555X13002481 |journal=Geomorphology |language=en |volume=195 |pages=110–117 |doi=10.1016/j.geomorph.2013.04.032|bibcode=2013Geomo.195..110K ))</ref> draining into the playa, forming a shallow, short-lived [[endorheic lake]]. Under the hot desert sun, the thin veneer of water quickly evaporates leaving behind a surface layer of soft slick mud.  As the mud dries, it shrinks and cracks into a [[mosaic]] pattern of interlocking [[polygon]]s.((Citation needed|date=October 2023))

The shape of  the shallow hydrocarbon lake [[Ontario Lacus]] on Saturn's moon [[Titan (moon)|Titan]] has been compared to that of Racetrack Playa.<ref>Lorenz, R. D., B. Jackson and A. Hayes, "Racetrack and Bonnie Claire : Southwestern US Playa Lakes as Analogs for Ontario Lacus, Titan", Planetary and Space Science, 58, 723–31, 2010</ref>

((wide image|Deathvalleysky nps big.jpg|512px|360° night-time panorama of the Racetrack Playa. The [[Milky Way]] is the visible arc in the center above a [[sailing stone]] and tracks from others.|55%|left))((clear left))

==Features==

Racetrack is dry for almost the entire year and has no [[vegetation]].  When dry, its surface is covered with small but firm [[hexagon]]al mud crack polygons that are typically 3 to 4 inches (7.5 to 10&nbsp;cm) in diameter and about an inch (2.5&nbsp;cm) thick.  The polygons form in sets of three mud cracks at 120° to each other.<ref>Sharp, Robert P. and Allen F. Glazner, ''Geology Underfoot In Death Valley and Owens Valley'', 161–73, 1997</ref>  A few days after a precipitation event, small mud curls, otherwise known as "corn flakes" form on the playa surface.  Absence of these indicates that wind or another object has scraped away the tiny mud curls.

[[File:Runningrock2.jpg|thumb|Sailing stone in Racetrack Playa]]
During the bimodal rainy season (summer and especially winter) a shallow cover of water deposits a thin layer of fine mud on and between the polygons of Racetrack. Heavier winter precipitation temporarily erases them until spring when the dry conditions cause new mud cracks to form in the place of the old cracks. Sandblasting wind continually helps to round the edges of exposed polygons.  Annual precipitation is 3 to 4 inches (75 to 100&nbsp;mm) and ice cover can be 1 to 2.5 inches (2.5 to 6.5&nbsp;cm) thick. Typically only part of the playa will flood in any given year.

The Racetrack was vandalised in late 2016.<ref>((cite web|url=http://www.latimes.com/local/california/la-me-death-valley-damage-20160927-snap-story.html|title=Investigators think they know who tore up Death Valley's fragile Racetrack Playa in an SUV|first=Louis|last=Sahagun|website=[[Los Angeles Times]] |date=27 September 2016 ))</ref>

A portion of the playa's shoreline indicates ice activity, notably on the east side of the southernmost arm. A pavement of angular rock fragments and periodic alignments of bigger stones reveal little ice ramparts. Stone traces and ridges near the shore suggest ice thrusting and shearing.<ref name="Stanley-1955" />

Despite its thin grain, the pavement has closely matched parts that provide a mosaic-like effect. The pavement is lined with faint stone footprints, mostly to the northeast. Although modest, ice ramparts rise a few inches above the chip pavement. Ice along the beach seemed to be thrusting and shearing, with stones periodically scouring windows in the pavement.<ref name="Stanley-1955" />

Racetrack Playa's distinctive traits, including its low precipitation, large clay surface, and indications of ice action along the shore, add to its remarkable natural landscape.<ref name="Stanley-1955" />

=== Mapping ===
Detailed plots were made by nailing numbered tabs of tracing fabric to the clay along specific paths. Baselines, aligned by [[alidade]] beside paths, marked stations at 25 or 50-foot intervals. Distances were measured to the closest 0.005 feet using a 100-foot tape. Trigonometric computations were used to precisely connect the basis lines.<ref name="Stanley-1955" />

Rock mobility was associated with clear days following sub-freezing nights, which were caused by light breezes and the morning sun breaking up floating ice. Rocks were moved by ice disintegration, with over 60 moving in a single occurrence. Ice frequently fractured near rocks, causing wakes downstream. Some rocks went ahead of others, covering varied lengths. Ice fractures altered neighboring rocks, even those that were close together. The presence of a playa pool with precise depth parameters was a critical requirement for rock motion.<ref name="Norris-2014" />

Other elements included floating ice, appropriate temperatures, sunlight, and mild winds, which were most common around midday when the ice melted. Because of their origin beneath the ice, the formation of rock trails was difficult to detect. The rocks moved slowly, lasting up to 16 minutes at speeds ranging from 2 to 5 meters per minute. During the coldest weeks, weather station data revealed freezing temperatures and winds of up to 3-5 m/s. Episodic rock motion, which can last for years or decades, has been related to occasional rain or snow episodes that build winter ponds.<ref name="Norris-2014" />

=== Sailing stones ===
((Main|Sailing stones))
The [[sailing stones]] are a geological phenomenon found in the Racetrack.  Slabs of [[Dolomite (rock)|dolomite]] and [[syenite]] ranging from a few hundred grams (few ounces) to hundreds of kilograms (pounds) inscribe visible tracks as they slide across the playa surface, without human or animal intervention.  Instead, rocks move when ice sheets just a few millimeters thick<ref name="Lorenz 2014">((cite journal|last=Lorenz|first=Ralph|author2=Norris, J.|author3=Jackson, B. |author4=Norris, R.  |author5=Chadbourne, J. |author6= Ray, J. |title=Trail formation by ice-shoved "sailing stones" observed at Racetrack Playa, Death Valley National Park|journal=Earth Surface Dynamics Discussions|date=June 2014|volume=2|issue=2|pages=110–17|doi=10.5194/esurfd-2-1005-2014|url=https://www.earth-surf-dynam-discuss.net/2/1005/2014/esurfd-2-1005-2014.pdf |publisher=Copernicus|bibcode=2014ESuDD...2.1005L |doi-access=free ))</ref>  start to melt during periods of light wind. These thin floating ice panels create an [[ice shove]] that moves the rocks at up to five meters (16') per minute.<ref name="Norris-2014" />

The 2017 documentary ''Principles of Curiosity'' explores as its central theme the story of how the sailing stones' movement had been a mystery which came to be solved using the [[scientific method]] and [[critical thinking]].<ref>((Cite web|url=https://www.csicop.org/specialarticles/show/principles_of_curiosity_review|title=Principles of Curiosity Review - CSI|last=Gerbic|first=Susan|date=2017-07-26|website=www.csicop.org|archive-url=https://web.archive.org/web/20170726211121/https://www.csicop.org/specialarticles/show/principles_of_curiosity_review|archive-date=2017-07-26|access-date=2017-10-28))</ref>

=== Islands ===
[[File:Death Valley NP - Racetrack Playa - Grandstand.JPG|thumb|right|300px|[[The Grandstand]] in the northwest area of the playa]]
Two islands of bedrock [[outcrop]]s rise dramatically above the playa's surface at its northern end. The larger landmark is [[The Grandstand]], a ((convert|73|ft|m|adj=on)) high dark quartz monzonite outcrop, rising in dramatic contrast from the bright white surface of the Racetrack. The second 'island' feature is a smaller [[carbonate]] outcrop.

=== Springs ===
[[File:Gindarja Springs.jpg|thumb|Depressions in the Racetrack playa are intermittent springs that are active at time of precipitation. Detailed view illustrate conical holes where the water comes out on the surface when this area receive excess of precipitation.]]
There are three areas of aligned depressions ([[intermittent springs]]) in the playa. 

Spinal Springs is in the central part of the Racetrack playa. It is 550 metres (600 yards) long and starts, at its northern end, with conical depressions only a few centimeters (inches) deep. Traced southward the depressions increase to ~5 metres (16') in width with scattered [[Creosote bush|creosote]] shrubs. They then narrow and become shallower again, and finally disappear. Further north and south along this linear formation, there were several other depressions that may be a continuation of the Spinal Springs alignment.<ref name="Kletetschka2013" />

Edge Springs is an alignment of the depressions along the southeastern edge of the Racetrack playa. The alignment parallels the toes of [[alluvial fans]] along the base of the steep [[mountain range]].<ref name="Kletetschka2013" />

Gindarja Springs is an alignment of depressions that consists of three large indentations aligned in a northwesterly direction within the Racetrack playa. Two are completely within the playa and the third is on the edge. All three are associated with significant vegetation.<ref name="Kletetschka2013" />

==Visiting==
((More citations needed section|date=October 2023))
Access is via Racetrack Road, reached at the Grapevine Junction near [[Scotty's Castle]]. The 28 mile rough gravel road heading south-west from [[Ubehebe Crater]] is passable with non-[[4WD]] vehicles but requires high ground clearance. It rounds the western side of the playa to a parking area with descriptive signs by the [[National Park Service]].  A bench here, placed by the Mano Seca Group, has scenic views of The Racetrack, The Grandstand, and mountain scenery.
Another access to Racetrack Playa is Lippincott pass road that enters the Racetrack valley from the south west, climbing up from [[Saline Valley]]. Lippincott Pass and the roads in Saline Valley are extremely rough and negotiable for high clearance 4WD vehicles with all-terrain tires only.

Camping, while not allowed on the playa, is available in "primitive campsite" areas to the north and south.
Visiting remote areas of Death Valley National Park bears considerable risk. Summer temperatures can surpass ((convert|120|°F|°C)) in certain spots, large areas are without cellphone reception, roads are treacherous and the closest gas station is in [[Panamint Springs, California|Panamint Springs]].

An observation from the early 1970s calls the current thinking((As of?|date=October 2023)) into question. During April or May 1972 or 1973, rocks up to 0.25 m in length were spotted moving purely owing to high winds on the wet playa surface. This calls into question the notion that strong winds and a water-slickened playa surface were both required for boulder movement on Racetrack Playa.<ref name="Jones-2015-2">((cite journal | url=https://www.sciencedirect.com/science/article/abs/pii/S1875963715000713 | doi=10.1016/j.aeolia.2015.08.001 | title=Racetrack Playa: Rocks moved by wind alone | date=2015 | last1=Jones | first1=Ronald | last2=Hooke | first2=Roger LeB. | journal=Aeolian Research | volume=19 | pages=1–3 | bibcode=2015AeoRe..19....1J ))</ref>

While recent observations have indicated movement by wind alone and by wind operating on small sheets of ice, many features of the phenomena, particularly those involving bigger ice sheets, still require additional investigation.<ref name="Jones-2015-2" />

==See also==
((category see also|Death Valley|Protected areas of the Mojave Desert))
* [[Geology of the Death Valley area]]
* [[Places of interest in the Death Valley area]]

==References==
((More footnotes|date=May 2009))

* Richard D. Norris, James M. Norris, Ralph D. Lorenz, Jib Ray, Brian Jackson. Aug 27, 2014. “Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion.” PLOS ONE.
** Previous beliefs were debunked when researchers found that rocks on Racetrack Playa in Death Valley shifted as a result of thin melting ice sheets breaking away under mild winds. Between December 2013 and January 2014, this ground-breaking observation was made, demonstrating the episodic nature of rock movement on the flat playa surface.<ref name="Norris-2014" />

* Stanley, George M, 1 Nov. 1955. “Origin of Playa Stone Tracks, Racetrack Playa, Inyo County, California.” GSA Bulletin, Geological Society of America.
** Measurements support the theory that the tracks on Racetrack Playa in California, which are thought to be created by moving stones, demonstrate close parallelism that indicates unit movement. Wind-blown ice floes are likely to be pulling protruding stones, casting doubt on the theory that the stones were blown by the wind freely.<ref name="Stanley-1955" />
** Jones, Ronald, Hooke, Roger LeB. 2015. “Racetrack Playa: Rocks moved by wind alone.” ScienceDirect.
*** Since their first description in 1948, large rocks up to 320 kg have been seen being moved across Racetrack Playa in Death Valley, leaving unique paths in their wake. The physics of this rock movement, thought to be caused by wind on a wet and slick playa surface, has been a matter of continued discussion for years despite the observation of similar phenomena in other places.<ref name="Jones-2015-2" />
((reflist))
((refbegin))
* ((Cite journal | last=Messina | first=P. |author2=Stoffer, P. |author3=Clarke, K.C.  | year=1997 | title=Mapping Death Valley's Wandering Rocks | journal=GPS World | issue=April | pages=34–44))
* ((Cite journal | last=Reid | first=J.B. | year=1995 |author2=Bucklin E.P. |author3=Copenagle L. |author4=Kidder J. |author5=Pack S.M. |author6=Polissar P.J. |author7=Williams M.L.  | title=Sliding rocks at the Racetrack, Death Valley: What makes them move | journal=Geology | volume=23 | issue=9 | pages=819–22 | doi=10.1130/0091-7613(1995)023<0819:SRATRD>2.3.CO;2| bibcode=1995Geo....23..819R ))
* ((Cite journal | last=Sharp | first=R.P. |author2=Carey D.L.  | title=Sliding stones, Racetrack Playa, California | journal=Bulletin of the Geological Society of America | volume=87 | issue=12 | pages=1704–1717 | doi=10.1130/0016-7606(1976)87<1704:SSRPC>2.0.CO;2 | year=1976| bibcode=1976GSAB...87.1704S ))
* ((Cite journal | last=Sharp | first=R.P. |author2=Carey, D.L. |author3=Reid, J.B. Jr. |author4=Polissar, P.J. |author5=Williams, M.L. | year=1996 | title=Sliding rocks at the Racetrack, Death Valley: What makes them move? Discussion and Reply | journal=Geology | volume=25 | pages=766–67 | doi=10.1130/0091-7613(1996)024<0766:SRATRD>2.3.CO;2 ))
* ((Cite book | last=Sharp | first=R.P. |author2=Glazner, A.F.  | year=1997 | title=Geology Underfoot in Death Valley and Owens Valley | publisher=Mountain Press Publishing Company | location=Missoula | isbn=0-87842-362-1))
* ((Cite journal | last=Shelton | first=J.S. | year=1953 | title=Can Wind Move Rocks on Racetrack Playa | journal=Science | publisher=The American Association for the Advancement of Science | volume=117 | issue=3042 | pages=438–439| doi=10.1126/science.117.3042.438-a | pmid=17795134 | bibcode=1953Sci...117..438S ))
* ((Cite journal | last=Stanley | first=G.M. | title=Origin of playa stone tracks, Racetrack Playa, Inyo County, California | journal=Bulletin of the Geological Society of America | volume=66 | issue=11 | pages=1329–1350 | doi=10.1130/0016-7606(1955)66[1329:OOPSTR]2.0.CO;2 | year=1955| bibcode=1955GSAB...66.1329S ))
((refend))

==External links==
((commons category|Racetrack Playa))
* ((Skeptoid|id=4021|number=21|title= Living Stones of Death Valley|date=2007-01-15))
* [https://www.youtube.com/watch?v=u1hoiHvOeGc Video of the Living Stones of Death Valley]
* [https://web.archive.org/web/20041031155120/http://geology.wr.usgs.gov/docs/parks/deva/ftrac1.html USGS: Racetrack Playa]
* [http://www.reymisterios.com/misterios-sin-resolver/las-piedras-que-se-mueven-solas-valle-de-la-muerte.htm Las piedras que se mueven solas valle de la muerte ( Español )]
* [http://geology.com/articles/racetrack-playa-sliding-rocks.shtml The Sliding Rocks of Racetrack Playa]
* [https://web.archive.org/web/20071013164343/http://sophia.smith.edu/~lfletche/deathvalley.html The Mystery of the Rocks on the Racetrack at Death Valley]
* [https://web.archive.org/web/20071202123403/http://geology.wr.usgs.gov/docs/parks/deva/ftracPM.html Differential GPS/GIS analysis of the sliding rock phenomenon of Racetrack Playa, Death Valley National Park]
* [http://racetrackplaya.org Rocks in Motion]
* [http://principlesofcuriosity.com/ Principles of Curiosity]

((Death Valley))

[[Category:Death Valley]]
[[Category:Death Valley National Park]]
[[Category:Salt flats of California]]
[[Category:Endorheic basins of the United States]]
[[Category:Landforms of Inyo County, California]]
[[Category:Natural history of the Mojave Desert]]

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Template:Side box (view source) (template editor protected)
Template:Sister project (view source) (template editor protected)
Template:Skeptoid (view source) (semi-protected)
Template:Sp (view source) (template editor protected)
Template:Template link (view source) (protected)
Template:Template other (view source) (protected)
Template:Tl (view source) (protected)
Template:Wide image (view source) (template editor protected)
Template:Yesno (view source) (protected)
Template:Yesno-no (view source) (template editor protected)
Module:Arguments (view source) (protected)
Module:Category handler (view source) (protected)
Module:Category handler/blacklist (view source) (protected)
Module:Category handler/config (view source) (protected)
Module:Category handler/data (view source) (protected)
Module:Category handler/shared (view source) (protected)
Module:Category see also (view source) (template editor protected)
Module:Check for unknown parameters (view source) (protected)
Module:Citation/CS1 (view source) (protected)
Module:Citation/CS1/COinS (view source) (protected)
Module:Citation/CS1/Configuration (view source) (protected)
Module:Citation/CS1/Date validation (view source) (protected)
Module:Citation/CS1/Identifiers (view source) (protected)
Module:Citation/CS1/Utilities (view source) (protected)
Module:Citation/CS1/Whitelist (view source) (protected)
Module:Citation/CS1/styles.css (view source) (protected)
Module:Convert (view source) (template editor protected)
Module:Convert/data (view source) (template editor protected)
Module:Convert/text (view source) (template editor protected)
Module:Coordinates (view source) (protected)
Module:Coordinates/styles.css (view source) (protected)
Module:Delink (view source) (protected)
Module:Disambiguation/templates (view source) (protected)
Module:Format link (view source) (template editor protected)
Module:GetParameters (view source) (template editor protected)
Module:Hatnote (view source) (template editor protected)
Module:Hatnote/styles.css (view source) (template editor protected)
Module:Hatnote list (view source) (template editor protected)
Module:If empty (view source) (protected)
Module:Infobox (view source) (template editor protected)
Module:Infobox/styles.css (view source) (template editor protected)
Module:InfoboxImage (view source) (template editor protected)
Module:Infobox body of water tracking (view source) (template editor protected)
Module:Infobox mapframe (view source) (template editor protected)
Module:Labelled list hatnote (view source) (template editor protected)
Module:Lang (view source) (template editor protected)
Module:Lang/ISO 639 synonyms (view source) (template editor protected)
Module:Lang/data (view source) (template editor protected)
Module:Language/data/iana languages (view source) (template editor protected)
Module:Language/data/iana regions (view source) (template editor protected)
Module:Language/data/iana scripts (view source) (template editor protected)
Module:Language/data/iana suppressed scripts (view source) (template editor protected)
Module:Language/data/iana variants (view source) (template editor protected)
Module:Location map (view source) (template editor protected)
Module:Location map/data/California (view source) (template editor protected)
Module:Location map/data/USA California (view source) (template editor protected)
Module:Location map/styles.css (view source) (template editor protected)
Module:Mapframe (view source) (template editor protected)
Module:Math (view source) (protected)
Module:Message box (view source) (protected)
Module:Message box/ambox.css (view source) (protected)
Module:Message box/configuration (view source) (protected)
Module:Namespace detect/config (view source) (protected)
Module:Namespace detect/data (view source) (protected)
Module:Native name (view source) (template editor protected)
Module:Navbar (view source) (protected)
Module:Navbar/configuration (view source) (protected)
Module:Navbar/styles.css (view source) (protected)
Module:Navbox (view source) (template editor protected)
Module:Navbox/configuration (view source) (template editor protected)
Module:Navbox/styles.css (view source) (template editor protected)
Module:Pagetype (view source) (protected)
Module:Pagetype/config (view source) (protected)
Module:Pagetype/disambiguation (view source) (protected)
Module:Pagetype/setindex (view source) (protected)
Module:Pagetype/softredirect (view source) (protected)
Module:SDcat (view source) (protected)
Module:Side box (view source) (template editor protected)
Module:Side box/styles.css (view source) (template editor protected)
Module:String (view source) (protected)
Module:String2 (view source) (template editor protected)
Module:Unicode data (view source) (template editor protected)
Module:Unsubst (view source) (protected)
Module:Wide image (view source) (template editor protected)
Module:WikidataIB (view source) (template editor protected)
Module:WikidataIB/nolinks (view source) (template editor protected)
Module:WikidataIB/titleformats (view source) (template editor protected)
Module:Wikitext Parsing (view source) (protected)
Module:Yesno (view source) (protected)

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Retrieved from "https://en.wikipedia.org/wiki/Racetrack_Playa"