Cornice triggered natural avalanche, Saddle Peak

Cornice broke in between north and south saddle peaks.  The initial propagation width was hard to distinguish.  Maybe 50 feet.  About 18 inches deep at height of crown.  
 

Skied down Rocky Rib and then into south east facing trees that follow the path.  At the Argentina/ Shushmans traverse elevation there was a visible 2 foot wall and the slide had continued over the roll below.