 DevCon Decisions by Clay Mackle, episode 14, Caves. If it's too hot outside, a good place to cool off is in a cave. Three local caves include Natural Bridge Caverns, one of the largest in Texas, and includes other activities like mining, sublinings, and mazes. I remember the cave without a name, finally, because it's further off the beaten path with fewer tourists. It always felt more like a personal tour. The third is Cascade Caverns, which first opened in 1932 and contains a 100-foot waterfall in the cathedral room. It is also the home to the rare Cascade Cavern Salamander.