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 Buangor State Park and was reported to have been visited by Major Thomas Mitchell during the 1830s. There were a number of sawmills in the area in the 19th century. Mount Buangor State Park Mount Buangor State Park is located 60 kilometres west of Ballarat, Victoria in Bayindeen. The eucalypt trees include yarra and manna gums, blue gums and Messmates, narrow-leaf peppermint gums, snow gums and Red Stringybarks as well as large tree ferns. More than 130 species of birds have been recorded in the Mount Cole State Forest which includes this park. Fauna includes echidnas, deer, eastern grey kangaroos, wallabies, possums, gliders