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Medicine Lake, California simplified hazards map showing potential ...
Medicine Lake, CA simplified hazards map
Medicine Lake, CA simplified hazards map
Medicine Lake, CA simplified hazards map

Medicine Lake, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

Medicine Lake, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

A small child wearing warm winter clothing is viewed from the back, standing in a natural tunnel of dark volcanic rock. The roof of the tunnel is crusted with white minerals and drips of hardened rock, and to the right horizontal raised lines follow the wall of the tunnel to show lava flow levels.
Valentine Cave lava tube at Medicine Lake volcano
Valentine Cave lava tube at Medicine Lake volcano
Valentine Cave lava tube at Medicine Lake volcano

View from entrance of Valentine Cave toward interior shows the raised lines of high-lava marks on wall on wall of central pillar. USGS photo by J. Donnelly-Nolan.

View from entrance of Valentine Cave toward interior shows the raised lines of high-lava marks on wall on wall of central pillar. USGS photo by J. Donnelly-Nolan.

Map showing one-year probability of accumulation of 1 centimeter
Map showing one-year probability of accumulation of 1 centimeter
Map showing one-year probability of accumulation of 1 centimeter
Tephra provides clues to eruptive history of Medicine Lake Volcano,...
Tephra provides clues to eruptive history of Medicine Lake Volcano, CA
Tephra provides clues to eruptive history of Medicine Lake Volcano, CA
Tephra provides clues to eruptive history of Medicine Lake Volcano, CA

Geologists examine tephra deposits to better understand the early eruptive behavior of the Medicine Lake Volcano, evidence of which can be found as far away as central Oregon.

Aerial view of lava tube across landscape
A lava tube trace (dark sinuous shape) along the ground surface.
A lava tube trace (dark sinuous shape) along the ground surface.
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