April 4 lahar deposit in Drift River Valley. Grapefruit-sized lt grey rounded block w/ abt hackly void space - dark band
Andesites of the 2009 eruption of Redoubt Volcano, Alaska
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.