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 Sunapee State Park Mount Sunapee State Park Mount Sunapee State Park is a state park in Newbury, New Hampshire. The park includes a beach portion on Lake Sunapee and most of Mount Sunapee. The state has leased the ski area to Mount Sunapee Resort. Mount Sunapee State Park's beach, also known as Newbury Beach, features a bathhouse, store, canoe and kayak rentals, and a playground. A boat launch is available with some restrictions. There is a seasonal campground located off NH Route 103, up a winding mountain road accessed through the Mount Sunapee Resort. Activities in the park include swimming, hiking, camping, skiing,