A tourist visiting Mount Rushmore N.M, Crazy Horse Monument, Wind
Cave N.P. Custer State Park, or any of the other attractions of the Black Hills
of South Dakota might wish to stop and take a picture of this arch which is
about a mile east of Sylvan Lake on The Needles Highway (Rt. 87) not far
from Mt. Rushmore. The author estimates the height of the opening to be about 18 feet.
Photo by Richard Barron.