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)

See also

• List of volcanoes in the Philippines
  • List of active volcanoes in the Philippines
  • List of potentially active volcanoes in the Philippines
  • List of inactive volcanoes in the Philippines
• Philippine Institute of Volcanology and Seismology