Both mountains are in Randolph's Ice Gulch Town Forest.

On the 1896 topographic map, Mount Crescent is shown as "Randolph Mtn."

with an elevation of 3,280 ft, and Black Crescent is shown as "Mt.

The southeast side of Mount Crescent drains into Moose Brook, thence into the Androscoggin River, which drains into Merrymeeting Bay, the estuary of the Kennebec River, and thence into the Gulf of Maine.

The northwest side of Crescent drains into the Upper Ammonoosuc River, thence into Connecticut River, which drains into Long Island Sound in Connecticut.