BACKGROUND
The low cone is grass-covered and andesitic-to-dacitic in composition.
Musuan last erupted in Dec 1886, as a Jesuit priest reported who visited the volcano 4 years later in 1891, at which time there was still strong fumarolic activity, which prevented closer examination. The eruption was probably phreatic in nature, and was reported to have "burned everything around it".
1976 seismic swarm
A strong earthquake swarm occurred near Musuan volcano in 1976.
Biliran is an solfataric active volcano and a volcanic island located in Biliran Province of the Eastern Visayas Region (Region VIII), in Visayasislands group of the central Philippines.
It is one of the active volcanoes in the Philippines.
Biliran volcano comprises the whole 20x35 km Island of Biliran which is formed by a group of lava domes. It is located across the narrow Biliran Strait from the northern tip of Leyte Island.
Biliran volcano is at the northern end of a 170 km long volcanic chain extending SSE to Panaon Island.
The only known historic activity took place on 26 September 1939 and consisted of a phreatic explosion accompanied possibly by a debris avalanche. Ash fell in Caibiran town 12 km to the E.
There are many fumarole fields, hot springs, mud pools and thermal areas on Biliran.
The Pocdol Mountains are a volcanic group of stratovolcanos in the Philippines.
The range is also known as the Bacon-Manito Volcanic Group.
The volcanic Pocdol Mountains (also known as Bacon-Manito complex) are a group of volcanic cones between Saragon Bay and Albay Gulf in southern Luzon.
Some of the cones are probably only a few thousands of years old. A fumarole field and a geyser are found in the area,