Canon Balls in Theodore Roosevelt Nat'l Park, North Unit, ND Filename: CEM009479-TRNP-ND-USA.jpg
Theodore Roosevelt Nat'l Park, North Unit, ND Filename: CEM009485-TRNP-ND-USA.jpg
Theodore Roosevelt Nat'l Park, North Unit, ND Filename: CEM009486-TRNP-ND-USA.jpg