Colossal Cave Mountain Park

-Colossal Cave is a large cave system in southeastern Arizona, near Vail, and about 22 miles southeast of Tucson
-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