These enormous caves have become a big draw to this area. You can explore at least 22 mud caves from this trail, and most likely have plenty of company. If is dangerous to be in the area if it is raining or has just rained, so please check the conditions before visiting. To extend your adventure from this trail, you can take Sandstone Canyon from Diablo Dropoff. Check for closures first. Green-sticker vehicles are not permitted in the park.
Maps of the mud cave network are available online. In 2012, a hiker fell into a giant crevice and died. So, for liability reasons, the state park no longer sells the maps or encourages people to go in the caves. However, they do not prohibit people from entering and the caves are still very popular. FunTreks also advises that if you go into the caves, you do so at your own risk. Please be careful.