It smelled like somebody took a dump in a sandbox, rubbed it around with their fingers, and then let it sit in front of a heat lamp for 300 years. The step entrance into Colossal Cave may have been ...

It was a beautiful day for the inaugural hiking combo—a tour of the Historic Colossal Cave in Vail, Arizona, and a hike in the Colossal Cave Mountain Park along with the Arizona Trail. Colossal Cave’s ...

While Arizona is famous for its stunning landscapes and dramatic rock formations, some of the best things to see here are underground. Arizona has numerous famous caves — some readily open to the ...

Richard Milbauer, top, and Heather Shearer use night-vision modified video cameras to record the Haunted Historians tour of Colossal Cave and the park grounds east of Tucson. Chloe Flanders, left, and ...

Like so many caves in Arizona, the Colossal Cave in Vail has a tawdry history all its own. Centuries after the Hohokam abandoned the sanctity of the cave, bandits took refuge there in 1884 after ...