Mount Mitchill, at an elevation of 266 feet above sea level, is the highest natural point on the Atlantic Seaboard between southern Maine and the Yucatan Peninsula of Mexico. Cartographers named the prominence, located in the southwest corner of the park, in honor of Dr. Samuel Latham Mitchill (1764-1831), a New York physician, naturalist, educator, and U. S. Congressman. Mitchill was part of an 1816 expedition to measure the height of the Navesink Highlands. Mount Mitchill and the surrounding highlands are prone to slumping, or slump blocking, a geological phenomenon in which large blocks of earth, typically sandy soil covered by an erosion-resistant capstone layer of ironstone, slide suddenly down a cliff face.