Arizona water officials are concerned that a series of important steel tubes buried well underneath Glen Canyon Dam were damaged from an experiment in releasing extra water and sediment.

PHOENIX — A popular arch at Glen Canyon National Recreation Area surrounding Lake Powell collapsed, officials announced Friday. National Park Service rangers said the “Double Arch” standout ...

A natural rock formation millions of years old has collapsed at Glen Canyon National Recreation Area in Utah, rangers reported. The famed Double Arch in Rock Creek Bay in Lake Powell collapsed ...

MARBLE CANYON, Ariz. (KUTV) — An employee at the Glen Canyon National Recreation Area has been reported missing. Officials with the recreation area said Matt Kemper was last seen at Red Rock ...

A frequently visited arch collapsed in Rock Creek Bay in Glen Canyon National Recreation Area in Utah, the National Park Service reported Friday in a news release. CNN values your feedback 1.