154 reactions · 107 shares | Redoubt Volcano (Alaska) erupted 26 years ago this week, with eruptions continuing into June of 1990. Here is a fixed wing fly-by of the volcano, including a tipped wing look down into the crater, taken during an eruption on January 14, 1990. The video is from the Alaska Volcano Observatory archives. #usgs #avo #alaskavolcanoobservatory #volcanoes #redoubt #geology | USGS Volcanoes | Facebook

Redoubt Volcano: The early part of the 1989-90 eruption was characterized by explosive events and widespread flooding of the Drift River valley. Hot volcanic debris interacted with snow and ice to form fast-moving slurries of water, mud, rocks, and sand. These flows, called lahars, completely inundated the Drift River valley downstream from Redoubt several times during the 1989-90 eruptions. Such flows posed a hazard to the Drift River Oil Terminal, located 35 km east of Redoubt near the mouth o