Guided evening tours to the Frio Cave near Concan, where one of the largest bat colonies on earth — millions of Mexican free-tailed bats — pours into the sky at sunset through the warm months.
A short drive from Concan and Garner, the Frio Cave holds a summer colony measured in the millions. On a guided evening tour you watch them spiral out at dusk in a ribbon that can take a long while to clear the cave — a genuinely staggering thing to stand under.
Through the warm season, millions of Mexican free-tailed bats stream out at sunset to feed. The sky fills, and the sound carries.
The cave is on private land, so it is tours only — reserve ahead, and plan for an evening that runs with the sunset, not the clock.
It folds neatly into a Concan trip: the river by day, the bats at dusk.
The cave is a short drive from Concan and Garner State Park.
Backroads Hill Country has represented Hill Country rentals since 2001. Backroads ↗
Concan is the natural base — the Frio by day, the bats at dusk.
Pair it with a Frio float and Garner State Park. Plan the route on the HillCountry.ai network.
It is seasonal and by guided tour only on private land, so book ahead and check the official site for current dates and times before you plan an evening around it.