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Over thousands of years, the powerful Potomac River carved out the Potomac Gorge, revealing the complex geology which, with the river, is the foundation of this extraordinary Natural Area. The landscape at Potomac Gorge includes the Great Falls of the Potomac, a series of dramatic cascades forced through narrow Mather Gorge as the river drops nearly 80 feet in elevation over less than a mile. This exceptional site provides habitat for over 60 rare plants and animals.