This hike is very different for Texas, one of the few slot canyons that I'm aware of, other than the Narrows in Tule Canyon in the Panhandle.
There are few boulders to climb over, so it is relatively easy. The canyon narrows to about 5 feet wide at a couple of points. During my hike, at least 2-3 rocks of the size of a fist or larger came tumbling down from above with little warning, so it really pays to stay alert.
All in all, this was a very enjoyable and beautiful hike.