Lahars that formed during the 1989-90 eruptions of Redoubt Volcano in Alaska accumulated in the Drift River Valley NE of the volcano. The largest lahars, such as this one from the February 15, 1990 eruption, covered the valley floor nearly wall-to-wall and extended more than 35 km to the Cook Inlet.
Type/Process: Lahar (Mudflow)
Volcanic Status: Historical
Image Number: 052-042
Photographer: Tom Miller (U.S. Geological Survey)
Summit Elevation: 3108 meters
Latitude/Longitude: 60.485 N / 152.742 W
Timeframe: Last known eruption 1964 or later