A.K Pearson 1969 Spent several hours looking for the perfect Tillandsia site - one area was on an army reservation full of garbage & paper. The other spot was up the Quebrado cruz de hueso "upstream" from San Bartolo. We drove up to the end of the garbage dump area and found some Tillandsia growing on great sandy hill areas on the right, and Tillandsia on a very rocky hill areas on the left. While the rest of the crew were examining the sandy area I stayed by the car. Noticed some little holes in the ground and started to excavate a couple. In the second one I looked at I found a lizard - Gecko? . The burros seemed to be blind, and the lizard was about 3" under the surface. The top inch of soil was damp from the contact "garra", under which was a layer of very fine dirt. About 3 inches down was a layer of harder rock - not impenetrable but quite compressed. Subsequently I spent over half an hour digging up more holes but didn't find any more. OP found another gecko, which seems to be a different species, just a little up the rocky mountain. The rest put out traps tonight, but I didn't. I show me were tying the tag on the lizard #600 and it vocalized - sort of a low-pitched rasp. Carol had heard it do that earlier, too.