What a cool trail! Love the tunnels. It's SO hot so plan accordingly; bring lots of water. There is a portapotty and water fountain at the end of the trail where you can fill up for your way back - you're gonna need it. Don't touch the cacti, ouch lol. I enjoyed stopping and chilling in the caves, perfect place to roll a joint, not that I did that or anything. You will hear bats in the cave, it's so cool!