The Grand Canyon Caverns Suite is described by the attraction's staff as the world's deepest, darkest and quietest hotel room. It overlooks the Chapel of the Ages, a vast cavern room whose colors ...

SELIGMAN, AZ (AZFamily) — Twenty-one stories deep and about a mile off of old Route 66 sits the Grand Canyon Caverns. Formed over 15 million years ago, they were discovered in 1927, and tours ...

A husband and wife, a couple with two young children and at least two people in their 70s had taken a 30-minute tour of the Grand Canyon Caverns on Sunday and were preparing to return aboveground ...