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USGS scientist waits for helicopter pick-up in Mount St. Helens crater

By Volcano Hazards Program
USGS scientist waits for helicopter pick-up in the crater of Mount ...
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Detailed Description

USGS-CVO Research Geologist Peter Kelly communicates with the helicopter pilot and prepares for pick-up, on the new dome within the crater of Mount St. Helens.

Sources/Usage

Public Domain.