Mallory Cave, located on Dinosaur Mountain in Boulder, Colorado, offers hikers a unique combination of natural beauty and wildlife conservation. Discovered in 1932 by University of Colorado student E.C. Mallory, the cave has since become a vital habitat for Townsend’s big-eared bats, a sensitive species in the region.

A Safe Haven for Bats

Mallory Cave plays an important role as a roosting site for Townsend’s big-eared bats, known for their distinctive, large ears. These bats are highly vulnerable to disturbances and white-nose syndrome, a fungal disease that has severely impacted bat populations across North America. To protect the bats, the cave itself is closed year-round, with an additional seasonal buffer zone from April 1 to October 1 during the bats’ active period.

A Unique Destination in Boulder

Although the cave is off-limits, the hike leading up to Mallory Cave remains a popular outdoor activity. The trail starts at the National Center for Atmospheric Research (NCAR) and spans approximately 3 miles round trip, with an elevation gain of around 800 feet. Along the way, hikers are treated to sweeping views of the Flatirons, dense pine forests, and glimpses of local wildlife. The final portion of the hike involves a steep scramble up to the cave entrance, where visitors can observe the gated entry and learn more about the area’s wildlife conservation efforts.

Current Status and Conservation

Mallory Cave is currently closed to visitors to ensure the protection of the bat population and prevent the spread of white-nose syndrome. However, the trail leading up to the cave is open outside the seasonal closure period, offering hikers a rewarding journey through scenic terrain. Visitors are encouraged to respect the posted restrictions and contribute to preserving this important natural habitat.

Protecting Boulder’s Wildlife

Mallory Cave stands as a reminder of Boulder’s dedication to wildlife preservation. While direct access to the cave is not possible, the surrounding trails offer outdoor enthusiasts a chance to explore and appreciate the natural beauty of the area. By respecting conservation measures, visitors help protect the bats and ensure the continued health of the local ecosystem.

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