Hill Country/Llano River Country/Mason/Experience/Eckert James River Bat Cave Preserve
Experience · Mason
Eckert James River Bat Cave Preserve
The Eckert James River Bat Cave Preserve protects a critical maternal colony of Mexican free-tailed bats. The site’s history is tied to the Eckert family, who purchased the land in 1907 and mined bat guano for fertilizer. In 1990, the family donated the cave to The Nature Conservancy to ensure permanent protection for the bats, with the condition that the land remain open to the public for education and observation.
Why people come here
Before you go
The 2026 open-night season runs Thursday-Sunday evenings from May 29 through September 6. Call the bat hotline before travel to confirm the changing start time and any weather or flood closure. Reaching the preserve requires crossing the James River by road; do not attempt the ford when the gauge exceeds the operator threshold.
Tonight
Good to know
When is the preserve open to the public?
The preserve is open Thursday through Sunday evenings from late May to early September. Visitors should call the bat hotline at 325-347-5970 before visiting to confirm the event start time, as bats emerge at varying times, and to check for weather or river flooding closures.
Are there facilities like restrooms or water available?
The preserve is a true wilderness area. There is no electricity, restrooms, water, or food available on site. Visitors should come prepared for a rustic experience and bring any necessary supplies with them.
How far is the walk to the cave entrance?
The cave is located about 500 yards from the parking area. It is reached by a trail that leads over a slight incline. This trail is not wheelchair accessible, though benches are provided for seating near the cave entrance.
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