Which is the most recent of the four Presidents carved into Mount Rushmore?
Mount Rushmore Mount Rushmore Mount Rushmore National Memorial is centered around a sculpture carved into the granite face of Mount Rushmore in the Black Hills in Keystone, South Dakota. Sculptor Gutzon Borglum created the sculpture's design and oversaw the project's execution from 1927 to 1941 with the help of his son Lincoln Borglum. The sculptures feature the heads of Presidents George Washington (1732–1799), Thomas Jefferson (1743–1826), Theodore Roosevelt (1858–1919), and Abraham Lincoln (1809–1865). The memorial park covers and is above sea level. South Dakota historian Doane Robinson is credited with conceiving the idea of carving the likenesses of famous people into the
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