During the last ice age literally 100s of glaciers moved through this area. Mountains have been sliced and gouged from every direction. The end result is steep mountain sides on pyramid shaped peaks and long narrow ridges or spines interspaced with broad U-shaped valleys. It is another fine example of the absolute raw power of nature. Pretty humbling. The ecology of the area is shaped by the remaining glaciers and the constant supply of fresh water that they supply. Not forever though!