I think he might have meant the moraine lake that forms at the base of the Thayer Glacier. Isn't Carver Lake at the base of the Prouty Glacier on the South Sister?
Fascinating. And a bit unnerving.Coincidentally, the New York Times this morning printed this story about flood surges in the Mendenhall Glacier near Juneau. http://www.nytimes.com/2013/07/23/us/alask...
