Red Rocks Amphitheatre is an open-air amphitheatre built into a rock structure near Morrison, Colorado, west of Denver. There is a large, tilted, disc-shaped rock behind the stage, a huge vertical rock angled outwards from stage right, several large outcrops angled outwards from stage left and a seating area for up to 9,525 people The amphitheater is owned and operated by the City and County of Denver, Colorado and is located in Red Rocks Park, part of the Denver Mountain Parks. - Source: Wikipedia