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Music Temple was a geological feature near the Colorado River in Glen Canyon, southern Utah, United States, which consisted of a grotto with high, vaulting walls and a deep central pool of water.
It was discovered by John Wesley Powell in 1869, who named it "Music Temple" because of its unusual acoustic properties: reportedly, a one-second note would reverberate for eleven seconds. It was considered one of the more beautiful natural formations of the area in the late 19th century and into the mid-20th century.
After the construction of Glen Canyon Dam in the early 1960s, Music Temple was within the area that was submerged by Lake Powell. It disappeared by the mid-1960s as the lake filled. The site is located on territory of the Navajo Indian Reservation.