The name of what is perhaps the most iconic mountain in the United States was given in a pretty unassuming way. The mountain was given Charles E. Rushmore’s name before the carving of the monument had began.

While working for the Harney Peak Tin Mining Company in the Black Hills in 1884, Rushmore was examining the legal status of several holdings.

Rushmore asked his local guide Bill Challis what the granite outcropping’s name was, according to the National Park Service. Never had a name, but from now on we’ll call it Rushmore, Challis retorted.

Locals started calling the granite outcrop Mount Rushmore once the moniker caught on. Three years after the memorial’s construction began, in June 1930, the U.S. Board on Geographic Names officially recognized it.

Charles Rushmore did contribute to the carving to support Gutzon Borglum’s endeavor. After all, Borglum’s carving is the main reason why most of us have ever heard of Charles Rushmore today, so it was the least he could do.