Finding caves, or making them?

Tini in a hole
Originally uploaded by texasrobo

That's Tini digging in a karst feature out off RM 620 in Round Rock. A bunch of dirt and rocks were cleared out to expose the opening, roughly 8 feet below ground surface. We're now a good 9 feet down, and digging off to the sides well beyond the narrow opening. I had to use my camera phone, because the weather has been pretty misty and I didn't want to bring my real camera out. Next week, nice weather and better pictures, and maybe we'll find the cave that's hidden under here!!