Crystal Glacier is in North Cascades National Park in the U.S. state of Washington, on the south slopes of Mount Shuksan. Descending from just east of the summit of Mount Shuksan, near its origination point, Crystal Glacier is connected to the larger Sulphide Glacier to the west. Crystal Glacier descends from , and is also connected to East Nooksack Glacier as well as Hanging Glacier near it uppermost margins. Both Crystal and Sulphide Glaciers have a series of high cascades which are collectively referred to as Sulphide Basin Falls. Below these cascades lies Sulphide Lake, which empties over Sulphide Creek Falls, one of the highest waterfalls in North America with a nearly drop.