Some of the pictures I've contributed to Wikipedia:

• 
  May Lake
• 
  O'Shaughnessy Dam
• 
  Wapama Falls
• 
  Chimney Rock National Historic Site
• 
  Yellow-bellied Marmot
• 
  Lembert Dome
• 
  Lembert Dome
• 
  Hard Disk
• 
  Mount Dana, Yosemite.
• 
  Pointing stick
• 
  Hoh River
• 
  Aquatic Garter Snake
• 
  Western Terrestrial Garter Snake
• 
  Bear Gulch reservoir at Pinnacles National Park
• 
  Mammillaria tetrancistra
• 
  Banana Slug
• 
  Willis Creek
• 
  Long Ridge Open Space Preserve
• 
  Lake Italy
• 
  Mount Gabb
• 
  Homesite of Juana Briones de Miranda
• 
  Kangaroo Lake (California)
• 
  Big Piney River
• 
  CZU Lightning Complex fires

And the articles I've created:

• May Lake (California)

• Rosshalde

• Mammillaria grahamii

• Mammillaria nivosa

• Willis Creek

• Gilroy Free Library

• Peninsula Open Space Trust

• Salsa Cycles

• Long Ridge Open Space Preserve

• Alidou Barkire

• Coso Range Wilderness

• Lake Italy

• Foothills Open Space Preserve

• Dirty Kanza

• Shuyak Island State Park

• Elsa von Blumen

• Dolan Fire

• Florence Ripley Mastin

• El Corte de Madera Creek Open Space Preserve