Devils Postpile National Monument is located in the eastern Sierra Nevada Mountains of California, near Mammoth Lakes. The monument is known for its unique geological formations, including towering basalt columns that resemble a giant pipe organ.

Visitors to Devils Postpile can enjoy a variety of outdoor activities, including hiking, fishing, and camping. The monument is also home to a number of scenic vistas and trails, including the popular Rainbow Falls Trail, which offers stunning views of a 101-foot waterfall.

One interesting fact about Devils Postpile is that it was once slated for development as a hydroelectric power plant. However, thanks to the efforts of conservationists, the area was ultimately saved and designated as a national monument in 1911.

The best time of year to visit Devils Postpile is during the summer months, when the weather is mild and the trails are open. However, visitors should be aware that the monument can be crowded during peak season, and may require a permit or reservation to access certain areas.

Overall, Devils Postpile National Monument is a unique and beautiful destination for nature lovers and outdoor enthusiasts alike, with plenty of opportunities to explore and discover the natural wonders of the Sierra Nevada Mountains.