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 Greylock State Reservation Mount Greylock State Reservation Mount Greylock State Reservation is public recreation and nature preservation area on and around Mount Greylock, the highest point in the state of Massachusetts. The park covers some in the towns of Lanesborough, North Adams, Adams, Cheshire, Williamstown and New Ashford, Massachusetts. It was created in 1898 as Massachusetts' first public land for the purpose of forest preservation. Mount Greylock State Reservation was created in 1898 when the state legislature passed Chapter 543 of the Acts of 1898, which appropriated $25,000 for land purchases and created the Greylock Reservation Commission as overseer. The Veterans War Memorial