Black Cap Mountain is a 3,321-foot (1,012-meter) mountain summit located in Glacier Bay National Park and Preserve, in the Alsek Ranges of the Saint Elias Mountains, in southeast Alaska. The mountain is situated immediately north of the entrance to Tidal Inlet, 80 mi (129 km) northwest of Juneau, and 3.5 mi (6 km) south of Mount Merriam, which is the nearest higher peak. Although modest in elevation, relief is significant as the mountain rises up from tidewater in less than two miles. The mountain's descriptive name was given by the U.S. Geological Survey in 1956 because the summit is composed of black limestone which contrasts with the color of the flanks of the mountain, making it visible for many miles. The mountain's name was officially adopted in 1960 by the U.S. Board on Geographic N