Here is my short recon of this area in this region of Atx. Personally would not recommend visiting this spot, turns out it is likely private property belonging to the neighborhood of Austin Colony Hoa. This muddy spot is near the Colorado River. Located at a park going on the trail turning left leading to a dead end drop off point, the whole area appeared eroded and considered unsafe due to possible landslide. Despite being secluded some of the time, again possibly private property of the Hoa there, when I wallow in the mud near the river, I heard loud popping noises go off near my direction coming from the right side of the river cliff terrain. I saw the water splash and immediately realized it was warning gunshots, so I Gtfo of the area. So, there's my own report and review. The areas with promising mud spots are likely occupied and private property. No trespassing.