The Shoestring Glacier is a small valley glacier, stretching out from the 8,364-foot (2,549 m) peak of Mount St. Helens in Skamania county in southwest Washington in the United States.[1] The source of the glacier was an ice and snow field on the summit of the mountain. 75% of the glacier's volume was removed through the 1980 volcanic activity of St. Helens, creating deadly lahars down the mountainside. The glacier has also created a truncated spur on the mountain.[2]