Biliran
Biliran Biliran province, Eastern Visayas region, Visayas island group, Philippines
Highest point
Elevation	1,340 m (4,400 ft)[1]
Prominence	199 m (653 ft)
Coordinates	11°39′00″N 124°32′06″E / 11.65°N 124.535°E / 11.65; 124.535[1]
Geography
Location	Biliran province, Eastern Visayas region, Visayas island group, Philippines
Geology
Age of rock	Quaternary[1]
Mountain type	Complex volcano
Last eruption	September 26, 1939[1]

Mount Biliran is a solfataric active complex volcano located in the island province of Biliran in the Philippines. The volcano caused the formation of the island.

Geological features

• Rock Type: Hornblende andesite containing greenish and black hornblende
• Tectonic Setting: Biliran Volcano is part of the curvilinear belt of Quaternary volcanoes in eastern Philippines, parallel to Phil. Trench to the east

Volcanic activity

• Number of Historical Eruptions: 1
• Latest Eruption/Activity: September 26, 1939
• Site: crater
• Eruption Character: Debris avalanche
• Affected Areas/Remarks: Ashfall at Caibiran and adjoining areas (6.35 cm thick deposits)
• Monitoring activity: Short-term monitoring in 1954

Physical features

• Hotsprings:
  1. Central Biliran – Libtong Thermal Areas (12 hot springs and one bubbling pool)
  2. North Biliran – Panamao Thermal Area
  3. Anas Thermal Area
  4. South Biliran – Kalambis Thermal Area
• Adjacent Volcanic Edifice:
  1. Panamao (107 m asl)
  2. Gumansan (1064 m asl)
  3. Lauan (1187 m asl)
  4. Suiro (1301 m asl)