Two months later...
The first three pictures are of a slot canyon along the Calcite Mine trail. A little trail off to the side took us through this canyon. The guidebook instructed us to stop when we came to a small wall, but a few adventurous souls decided to continue further while the others relaxed and enjoyed some cookies.
the one below is upstream from the small wall just before the canyon widened - and became less interesting.While walking through the canyon, I was reminded of a trip to Wisconsin Dells many years ago when I was but a wee lad. On a Duck Tour, my family and I got off to visit a canyon called "Fat Man's Misery" (or something like that. Perhaps "Fat Man's Nightmare.") I don't remember just how wide that was, but I don't think a large person would be very happy in some parts of these canyons.
the one below was explored on our last full day in Anza-Borrego. I'm not sure the name of the trail - it's not important - but it was very popular with both hikers and off-roaders. Before we entered the canyon, we encountered some mean looking VW Beetles ready for some serious rock climbing. The people attending the vehicles were nice enough but a little perplexed as to why we would be hiking when we could be in an ORV. I had a similar question for them and the beer.
I hope you enjoyed this journey down - actually up - the slot canyons visited this year. I have some more pictures that I will put up; those will show that I didn't go on this trip by myself.