Did You Know? That there is a cave in the mountain behind the heads on Mount Rushmore? It is called the Hall of Records. Gutzon Borglum and his workers started the drilling in July of 1938 and work was halted in July of 1939.
Did You Know? Over 90% of Mount Rushmore was carved by using dynamite. Dynamite blasts removed approximately 450,000 tons of rock from the mountain.
Did You Know? Did you know that the figure of Thomas Jefferson was started on Washington's right? after 18 months of carving the figure of Jefferson had to be dynamited off the mountain and restarted on the left of Washington.
Did You Know? Blue Flax is one of the most common flowers found at Mount Rushmore in in late spring and early summer? Native Americans added seeds from this plant to their food for added flavor.
Did You Know? Mount Rushmore is named after a New York City Attorney? Charles E. Rushmore was sent out to this area in 1884 to check legal titles on properties. On his way back to Pine Camp he asked Bill Challis the name of this mountain. Bill replied, "Never had a name but from now on we'll call it Rushmore
Did You Know? A committee of Rapid City Women's Club headed by Mrs. C.C. Warren and Mrs. Gutzon Borglum created this 39ft by 67ft flag for the dedication of the Washington figure on July 4, 1930. This flag was later used by Gutzon Borglum to to to to dedicate each of the other presidents.
Did You Know? The erosion rate of Mount Rushmore National Memorial is estimated by geologists at 1 inch every 10,000 years? It should be around for many years to come.