Mile 417 Looking Glass Rock, Blue Ridge Parkway, North Carolina - This is visible from many spots on the Parkway starting at Mount Pisgah. The name comes from the reflective look of ice frozen on the vertical cliff faces .
Clay Cahoon on Crossfire R), The Dihedrals, Smith Rock, Oregon. - They are considered cutting-edge even by today’s standards. Its sheer cliffs of tuff and basalt are ideal for rock climbing of all difficulty levels.