- Colossal Cave is a large cave system in southeastern Arizona
- It has 3.5 miles of mapped passageways, and temperatures inside average 70 °F year-round
- The cave is also known as "Mountain Springs Cave" and "Five–Mile Cave"
- Three non-motorized public trails for hiking, running, backpacking, mountain biking, and equestrians
- The cave became legendary when train robbers used it as a hideout after pulling a job
- It's near Vail, Arizona and about 22 miles southeast of Tucson
Website ==> ColossalCave.com
