president abraham lincoln at mount rushmore

area badland badlands black borglum boulder carve carved cracked curves curvy dakota distance element face faces father formation formations founder founders four granite gutzon hidden hills historical history infrared jefferson keystone lincoln line lines monochrome monolith monoliths monument monumental mount national park path pathway patriot patriotic president presidential presidents rapid recreation road rock rocky roosevelt rushmore sculptor sculpture sculptures sign signature signatures south spectacular states street striped stripes tall texture trail trails travel trip unique united usa washington