Ubinas is Peru's many energetic volcano. A small, 1.4-km-wide caldera cuts the top of the volcano. The steep-walled, 150-m-deep summit caldera includes an ash cone with a 500-m-wide and 200 m deep crater Debris-avalanche deposits through the collapse of this SE flank of Ubinas about 3700 years ago extend 10 km through the volcano. Extensive plinian pumice-fall build up from Ubinas feature certainly one of Holocene age about 1000 years back. Holocene lava flows are visible in the volcano's flanks, but historic activity, reported since the 16th century, has actually contained intermittent minor-to-moderate volatile eruptions.
Source: abbreviated from worldwide Volcanism Program informative data on Ubinas
Stratovolcano 5672 m (18, 609 ft)
Peru, -16.36°S / -70.9°W
2014-ongoing, 2009-2010, 2006-08, 1969, 1956, 1951, 1937, 1907, 1906, 1869, 1867, 1865, 1862, 1830, 1826(?), 1784, 1677, 1662, 1600, 1550 ± 50y