The launch of a new GVP website is scheduled for Monday, May 20, 2013.
|Subregion Name:||Central Philippines|
|Volcano Type:||Compound volcano|
|Last Known Eruption:||1939|
|Summit Elevation:||1301 m||4,268 feet|
|The volcanic island of Biliran, located across the narrow Biliran Strait from the northern tip of Leyte Island, contains many prominent andesitic lava domes, the highest of which is 1301 m Surio. Several Pleistocene K-Ar dates have been obtained from volcanic centers on northern Biliran Island. Fumarole fields are scattered throughout the 20 x 35 km wide island. The only known historical activity at Biliran was a phreatic explosive eruption and possible debris avalanche at a thermal area in 1939.|