This is an absolute MUST do! The hike is 6 mikes round trip. SUPER easy hike. Basically level. Sand is a bit rough in spots but totally doable. MAKE SURE you sign in at the trail head and get the trail guide. Super cool stuff to see and have explained along the way. The waterfall itself is incredible. Especially in the desert. We were there in December so Temps were perfect. It would be amazing to do in the summer and be able to see this grotto then.