In “Biography of a Mountain,” author Matthew Davis deftly weaves together interviews and stories that reveal so much more than a linear narrative of the monument’s history.

Mount Rushmore may be one of America’s most famous landmarks, but few people know architect Gutzon Borglum designed a hidden chamber inside the mountain. Today, a sealed titanium vault behind Abraham ...

Behind the iconic faces of Mount Rushmore lies a hidden room carved into the mountain—a secret dream of its creator, Gutzon Borglum. Meant to preserve America’s founding documents, it remains sealed ...