Most of southern Utah gives you red rock or black lava, and Snow Canyon gives you both stacked on top of each other. Navajo sandstone laid down as dunes more than 183 million years ago sits under basalt that poured through as recently as 27,000 years ago, so lava-capped ridges here were once canyon bottoms. It is a compact park with more than 38 miles of trail, all of it a short drive from St. George. Come early, since shade is scarce in a desert that averages about 7.5 inches of rain a year.
Do this: Hiking, lava-tube exploring, biking the paved trail
Family note: Lava caves + slickrock scrambling = all-timer
Fees and hours: stateparks.utah.gov
Add to the trip: Hidden Pinyon Overlook (Hike, 0 mi) · Petrified Dunes (Hike, 1 mi) · Red Cliffs Campground (Camping, 13 mi) · Kanarra Falls (Hike, 34 mi)