The black rock to our left is the North Sister and the Middle Sister is in the background. Collier Glacier is the largest in the state. It is about a mile and a half long, has an average width of 3000 feet and an estimated depth in the central portion of over 500 feet.
Some of the glacial streams have dry channels in the early morning but as the ice begins to melt the stream grows until by evening it is a regular torrent. The glacier can be seen in the background.