(Underwood & Underwood / Corbis) In the 1920s, despite the area’s atrocious roads, a fair number of adventurous travelers were visiting South Dakota’s Black Hills. But Doane Robinson, the official ...

Set in the Black Hills of South Dakota, Mount Rushmore may be one of the United States’ most recognizable landmarks, but as author Matthew Davis explains in “A Biography of a Mountain – The Making and ...