Image: Wikimedia Commons (Lahar filling the Pasig-Potrero River on the east side of Mount Pinatubo, Oct. 13 1991, photo by Chris Newhall, U.S. Geological Survey, public domain).
lahar-pinatubo-1991-usgs
Image: Wikimedia Commons (Lahar filling the Pasig-Potrero River on the east side of Mount Pinatubo, Oct. 13 1991, photo by Chris Newhall, U.S. Geological Survey, public domain).