Collapse and cracking of a 33 degree slope

Collapse and cracking of a 33 degree slope

This slope collapsed with a large "whumph" as we postholed downhill.  It moved  3" but was not steep enough to slide; about 33 degrees steepess.  Approximately 75 feet away a small rollover avalanched with this collapse.  The soft slab broke on a layer of buried surface hoar. Photo: GNFAC
 

Advisory Year
Lionhead Range, 2014-02-10