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Land characterized by buttes and hilltops with a lot of selenite content.
© OpenStreetMap contributors
A pocket of sand dunes.
A salt plain and saltwater lake known as the Great Salt Plains Lake lie here in the bed of what was once an ancient sea, where visitors sometimes look for selenite crystals.
Only gypsum cave supposedly open to the public in the United States, and one of the largest in the world.
The park got its name from the black lava rock that covered the area 30 million years ago. Hike the petrified forest trail and walk in fossil footprints of dinosaurs.