Devils Postpile/Rainbows Falls Professional Review and Guide
"The walk to Devils Postpile leads hikers along the beautiful San Joaquin River to a fascinating collection of basalt columns. Continuing past the Postpile leads to awesome Rainbow Falls, one of the finestwaterfalls in the Sierra Nevada.
With its strikingly geometric shapes, the Devils Postpile is one of the more unusual and beautiful formations in the eastern Sierra Nevada. Composed of columnar basalt, the Postpile is testimony to extensive volcanic activity that has taken place around the Long Valley Caldera. An active volcanic area, the caldera includes the volcano Mammoth Mountain, the Inyo Craters, Hot Creek, lava flows, glass flows, and even geothermal power plants. Yet the Devils Postpile is the most famous bit of evidence that the fiery forces beneath the surface have shaped the world we see."