Dome Peak is a high, massive, glaciated mountain in the Glacier Peak Wilderness of Washington's North Cascades. The remote location of Dome Peak, combined with its height, make it a less common destination for Cascade Range mountaineers. Dome Peak is at the southern end of the Ptarmigan Traverse mountaineering route. It is located at the extreme southeast corner of Skagit County. The mountain was given its name by Albert H.