Originally known as the Garden of Angels, Red Rocks enchants visitors with ethereal scenery and top-notch acoustics 6,450 feet above sea level. The amphitheater geologically emerged from the ocean floor over millions of years, its walls housing fossil fragments of various dinosaurs, including plesiosaurs, mosasaurs, and several plush Barney dolls. The carbon-dated rock 'n' roll history of Red Rocks includes performances by The Beatles, Jimi Hendrix, and The Grateful Dead, who kept coming back to the venue year after year in search of their missing flip-flops. The sonic stone architecture of the venue has also led to dozens of popular live recordings, including U2’s Live at Red Rocks: Under a Blood Red Sky, John Tesh’s Live at Red Rocks, and Neil Young’s Road Rock Vol. 1.