Great Basin National Park Sights

1. Lehman Caves

While Indigenous people were the first to explore and use the caves, rancher and miner Absalom Lehman is credited with discovering this underground wonder in 1885. The single limestone and marble cavern is 2½ miles long, with stalactites, stalagmites, helictites, flowstone, popcorn, and other bizarre mineral formations that cover almost every surface. Lehman Caves is one of the best places to see rare shield formations, created when calcite-rich water is forced from tiny cracks in a cave wall, ceiling, or floor. Year-round the cave maintains a constant, damp temperature of 50°F, so wear a light jacket and nonskid shoes. Go for the full 90-minute tour if you have time; during summer, it's offered several times a day, as is the 60-minute tour. Expect daily tours during the winter. Children under age five are not allowed on the 90-minute tours, except during the winter; those under 16 must be accompanied by an adult. Take the 0.3-mile Mountain View Nature Trail beforehand to see the original cave entrance and Rhodes Cabin, where black-and-white photographs of the park's earlier days line the walls. Get tickets as far in advance as possible at recreation.gov. Tours can sell out months in advance.