The collapse of the iconic "Toilet Bowl" arch at Lake Powell is a stark ... concerns about the stability of other popular arch formations in Utah, including the famous Delicate Arch.

The formation was sometimes referred to as the Toilet Bowl, the Crescent Pool and the Hole in the Roof. No one was hurt ...

A large geological feature in southern Utah known as the ''Double Arch,'' the ''Hole in the Roof'' and sometimes the ''Toilet Bowl'' has collapsed, National Park Service officials said Friday.