No! The eyes in the Mount Rushmore National Memorial are not hollow, the pupil of each eye is a 20-inch shaft of granite.
Mount Rushmore National Memorial is a sculpture that features the heads of former U.S. presidents George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln. It is carved into the side of Mount Rushmore near Keystone, South Dakota.
It was conceived by historian Doane Robinson to promote tourism in the region, but was sculpted by Gutzon Borglum and his son, Lincoln Borglum. The initial concept called for each president to be carved from head to waist, but a lack of funding forced construction to end in late October 1941.
Superintendent Cheryl Schreier announced a smoking ban on June 29, 2012 at Mount Rushmore National Memorial in an effort to promote safe visiting because of current dry conditions.