14er Red Rocks Park poster by artist Blair Hamill. Natural colors of Colorado’s sandstone are the backdrop for our Red Rocks – Music poster art print. This art was the first of three designs, commissioned by Denver Mountain Parks, in our Red Rocks Collection Series. Music notes and scales waft across the foreground of our design symbolizing the music and epic events the open-air amphitheatre has provided over the years, high above the town of Morrison and Denver, Colorado.