A phreatic eruption on the W side of the Cisingshan lava dome accompanied the Cisingshan debris avalanche about 6,000 years ago. Small funnel-shaped craters were the sources of explosive breccias several hundred meters wide and several meters thick that may have occurred only a few years before the collapse.

Photo by Alexander Belousov, 2008 (Institute of Volcanology, Kamchatka, Russia).

This image is made available under the Creative Commons BY-NC 4.0 license terms.

Keywords: crater | lava dome | crater | steam | emissions | gas

Tatun Volcanic Group