The rooted-up ground along these bottoms is the work of feral hogs, descended from Spanish domestic pigs turned loose centuries ago and from Eurasian wild boar released for hunting in the twentieth century. Texas holds more of them than any other state, in the low millions, and they are close to unstoppable: they breed at a year old, produce two litters a year, eat essentially anything, and are smart enough to learn traps. They feed by rooting, which turns creek bottoms and stream banks over like a plow and is the reason a hog problem shows up first as an erosion problem.
Getting there
29.6900, -96.9000
Locations are approximate and may be inaccurate, on private land, or otherwise inaccessible. Check before you travel.