The Monolith Festival was a music festival held at Red Rocks Amphitheatre in Morrison, Colorado. The first festival took place September 14–15, 2007 on 5 stages, including the Red Rocks main stage. The 2008 Monolith Festival was held on September 13–14. On April 11, 2009, it was announced on the official Monolith Festival Facebook Page that the 2009 Monolith Festival will be held on September 12–13.