Approximately 35 million years ago, rainfall flowed into the rock, and eroded passages that led to the Colorado River and what is now the Grand Canyon.

After a failed search for gold, he opened the caverns to travelers and began charging 25 cents admission, which included a view of a purported caveman.

Part of a group of Hualapai Native Americans harvesting and cutting firewood on the caverns' hilltop, they were trapped there for three days by a snowstorm.

Two brothers died from influenza, and since the ground was frozen solid with and covered in snow, they were buried in what was thought to be only a 50-foot (15 m) hole, as returning them to their tribal headquarters in Peach Springs risked spreading the flu.

This giant and extinct ground sloth lived during the Age of Mammals around 11,000 years ago, when the woolly mammoth and saber tooth cat roamed North America.

[4] The area includes a hotel, (The Grand Canyon Caverns Inn), an RV park, campgrounds, a restaurant, a convenience store, and a 5,100-foot (1,600 m) runway.