The debris avalanche -- Castle Lake
The avalanche also blocked the north-flowing Castle Creek, creating a rapidly growing lake that needed to have an emergency outlet constructed to prevent a catastrophic dam-burst flood. The lake today is about 100 feet deep, and is best seen from the Castle Lake overlook, which also provides the best overview of the hummocks.
Photo by James Maynard © 2010 - free use with attribution Full-size, jpeg format