Regarding the LIDAR program on Texas Parks and Wildlife Show, I have seen a preview of the program and I think they did a very nice job. They filmed a lot of the material at one of the LIDAR events but also used some old stock footage of folk entering Devils Sinkhole and also on tape and compass cave mapping. There are some older shots of folks surveying somewhere in Texas. I was told that one of the folks in the cave surveying shots are Keith Hoist? But I don't know for sure.
Anyway, I think you'll enjoy it. The dates for San Antonio (just south of the center of the universe) and in Austin (center of the universe) are as follows. Check local listings to be sure. Geary San Antonio KLRN Sunday, February 10 at 1 PM Monday, February 11 at 5 PM Tuesday, February 12 at 4:30 AM Austin KLRU Tuesday, February 12 at 11 PM Friday, February 15 at 5:30 AM Sunday, February 17 at 9 AM