The most fascinating attraction in Reds Meadow is the surreal volcanic formation of Devils Postpile National Monument. The 60ft curtains of near-vertical, six-sided basalt columns formed when rivers of molten lava slowed, cooled and cracked with perplexing symmetry. This honeycomb design is best appreciated from atop the columns, reached by a short trail. The columns are an easy, half-mile hike from the Devils Postpile Ranger Station.