Who is famous from Keystone SD?

Keystone, South Dakota, is best known for being the gateway to Mount Rushmore National Memorial, but one of its most famous residents is Gutzon Borglum, the sculptor who designed and initiated the monumental project. While Borglum himself was born in Idaho, he spent significant time in Keystone during the Mount Rushmore project. Additionally, the town has become famous for its tourism attractions and proximity to notable landmarks.