Black Mountain is a remote 7,262-foot summit in Washington’s North Cascades, within the Glacier Peak Wilderness of the Mount Baker-Snoqualmie National Forest. Rising steeply above the White Chuck River and lying between tributaries of the North Fork Sauk and White Chuck rivers, it marks a rugged divide between two watersheds near Glacier Peak. A survey party including A. H. Dubor, Thomas G. Gerdine, and Sam Strom likely made the first ascent in 1897 and reportedly named it for the dark color of its rock. Its dramatic relief reflects a landscape shaped by tectonic and volcanic forces and then deeply carved by Pleistocene glaciation.