Glacial Lake Overflow
During the maximum advance of the glacier, before the opening of Alpha Pass, all of the overflow from Lakes Watts and Edmund flowed through this valley, away from the viewer. Today, this deep, narrow valley has only a very small stream flowing through it. It is "underfit" because it was eroded by the vastly larger glacial lake overflow.
The lake overflow passed over a waterfall. The abrupt end of the rock cut, visible in this photograph, marks the former final location of the waterfall. Originally, the falls was further down the valley, and was eroded back to its final position by the glacial lake overflow. Construction of the Bessemer and Lake Erie Railroad in the valley in 1883 eliminated the waterfall.
Photo taken from Mahood Road, near the village of Queen Junction.