Elevations range from 3,600 feet to 6,350 feet, providing ample room and variety for flora and fauna. The latter includes the main attraction, an astounding colony of 300,000 Mexican free-tailed bats who live in the caves from late spring through early fall, emerging in a cloud at dusk for their moonlit feeding frenzy. And don't worry that a furry bat will try to feed on you. The only nourishment they're interested in comes in the form of flying insects. Almost three-fourths of the park, the southwestern portion, has been designated Wilderness.
Trails provide foot access.