The Castner Ice Cave, a popular hiking destination along the Richardson Highway near Delta Junction, has partially collapsed. The front part of the cave, located at the foot of the Castner glacier, has disappeared, but the rear part is still standing.
The first report that the cave collapsed came from hikers on Wednesday. Bureau of Land Management field manager Marnie Graham said they were unsure when the collapse happened, but added that “we expect it to have happened in the last week with a warm weather”. The collapse was not entirely unexpected as “glacial landscapes are constantly changing”, although Graham said they had not studied Castner Glacier or made any predictions about how it might change.