It is the second most active volcano in the Philippines with 33 historical eruptions.

Only two known historical eruptions have taken place, one in 1909 and another in 1921.

Most historical eruptions have affected only the summit region of the volcano.

The only other known historical eruption produced weak explosions in 1957.

The most recent historical eruption dates back to the 15th Century.

About 10 historical eruptions have been recorded since the late 18th century, the most recent in 1993.

Its largest known historical eruption was on November 13, 1899.

The only report of historical eruptions is from 1730.

There have been six historical eruptions recorded from the volcano since the 18th century.

Three historical eruptions have taken place - two within the 18th century, the first from 1700-1710, and the latter in 1796.