Alaska, United States
Mount Chiginagak is a stratovolcano in Alaska. In late 2004 or early 2005, a 1300 feet wide crater lake formed from meltwater within the summit crater. In July 2005, the southern crater rim was breached and the lake partially drained, producing a lahar with an estimated volume of 197 million cubic feet which ran for over 17 miles downstream.
Chiginagak is an Eskimo name published in 1888 by the USBF.