Our favorite and most exciting hike in Anza Borrego State Park was exploring the Arroyo Tapiado Mud Caves! We parked near the information sign seen above and immediately started checking out all the branching side canyons off of the main wash. In these canyons we came upon lots of unique mud formations such as tunnels, arches, and varying sized caves. Some of the branched canyons got very narrow. And some of the arches were low enough to make you duck under.