Fodor's Expert Review Trona Pinnacles National Natural Landmark

Fantastic-looking formations of calcium carbonate, known as tufa, were formed underwater along fault lines in the bed of what is now Searles Dry Lake. Some of the more than 500 spires stand as tall as 140 feet, creating a landscape so surreal that it doubled for outer-space terrain in the film Star Trek V. The Pinnacles also served as the backdrop in Planet of the Apes, Battlestar Galactica, and music videos by Rihanna and Lady Gaga. An easy-to-walk ½-mile trail allows you to see the tufa up close, but wear sturdy shoes—tufa cuts like coral. It's located 45 minutes east of Ridgecrest, and the best road to the area can be impassable after a rainstorm.