AWith two distinct desert ecosystems, the Mojave and the Colorado, Joshua Tree National Park offers endless outdoor adventures and unspoiled natural beauty. Explore the park's 12 self-guided nature trails, including Arch Rock and Wonderland of Rocks with large rock formations to climb on. The park offers exciting recreation, including hiking, biking, backpacking, horseback riding, rock climbing, and bird watching. Enjoy an off-road adventure through Pleasant Valley on Geology Road. Take in the scenic vistas at Keys View and visit Skull Rock.