ANCHORAGE - Geologists flew to Mount Redoubt to collect gas samples and look for signs of an eruption.
Geophysicist Rick Wessels of the Alaska Volcano Observatory said a steam plume was again spotted Saturday coming from above the 7,000-foot level near a dome that formed after the last Redoubt eruption in 1990.
The observatory two weeks ago detected a sharp increase in earthquakes underneath the mountain about 100 miles southwest of Anchorage and warned an eruption could be imminent.
Magma moving up the mountain warmed rock and created a fumarole, an opening in the earth that emits gases and steam. The activity has melted holes in Drift Glacier, which partly covers the mountain on its north side.
Elevated seismic activity also continues.
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