Exploring the hidden tunnel at Red Rocks

On the 75th anniversary of Red Rocks Amphitheater, we take you someplace even people who go to Red Rocks all the time haven't been -- under the rocks to the famous hidden tunnel. Denver7's Jaclyn Allen went backstage and underground to where legends (and their crews) leave their mark. Red Rocks is a place where fans flock to climb the stairs, where rock bands perform to become stars and where man and nature join to make history. But deep inside the iconic amphitheater is a place not open to the public. ◂ The Denver Channel, 7News, brings you the latest trusted news and information for Denver, Colorado, Mile High and the Rocky Mountains. Our mission is to provide useful, interesting news and updates on breaking news to people in the Denver metro area, all across our beautiful state of Colorado and all over the world. For more download the 7News mobile app: iPhone: http://bit.ly/iOS-kmgh Android: http://bit.ly/kmgh-android