Mount Rushmore community. Recent pine beetle infestations have threatened the forest. Mount Rushmore is largely composed of granite. The memorial is carved on the northwest margin of the Black Elk Peak granite batholith in the Black Hills of South Dakota, so the geologic formations of the heart of the Black Hills region are also evident at Mount Rushmore. The batholith magma intruded into the pre-existing mica schist rocks during the Proterozoic, 1.6 billion years ago. Coarse grained pegmatite dikes are associated with the granite intrusion of Black Elk Peak and are visibly lighter in color, thus explaining the light-colored streaks on the
Mount Everett State Reservation Mount Everett State Reservation Mount Everett State Reservation is a public recreation area in the towns of Mount Washington and Sheffield, Massachusetts, that offers panoramic views of Massachusetts, Connecticut, and New York from the summit of Mount Everett. The reservation abuts Jug End State Reservation and Wildlife Management Area; Bash Bish Falls State Park and Mount Washington State Forest lie to the west. All are managed by the Massachusetts Department of Conservation and Recreation. The state legislature established the Mount Everett Reservation Commission in 1908. The commission was provided a fund of $5000 to purchase land in the towns of