I went with Dylan and his scout troop on an overnight to Anza Borrego State Park last weekend. We explored a series of mud caves. Spelunking tip: remove sunglasses before going inside caves. I’d been wearing mine all day and forgot they were on, cruised into the cave and couldn’t see the two foot wide, 20 ft deep chasm on the side right near the entrance. I promptly fell into the chasm and the crunching sound was the water bottle in my back pocket. Sounded like bones breaking. Luckily my knee bent and wedged me near the top, breaking my fall and ripping the crotch of my pants!!