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 ...

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.