Pumice Crater and Crater Glass Flow Geologic Area

Pumice Crater and Crater Glass Flow Geologic Area is an 800 acre site that includes stunning geologic features. Red and white cinder cones overlook vast deposits of volcanic glass and pumice, as well as ancient faults and fissures. The features you see here record some of the complex geologic events which formed Medicine Lake Volcano (part of the Cascade Range) and have shaped the surrounding landscape.