ScottBall_cave-without-a-name-boerne-geology-environment-winter-concert-12-18-2018-1

Cave Without a Name General Manager Mike Burrell leads a group of tourists down into the cavern.

Cave Without a Name General Manager Mike Burrell leads a group of tourists down into the cavern. Credit: Scott Ball / San Antonio Report

Cave Without a Name General Manager Mike Burrell leads a group of tourists down into the cavern.