Devils Postpile National Monument is situated in eastern California, USA.

Devils Postpile National Monument, established in 1911, is a great place for enjoying a vacation. This monument is famous for its tall columns of basalts that are considered to be one the finest in the world. These postpile formations are almost 100,000 years old and were d due to volcanic activities. The Rainbow Falls is another important attraction at this National Monument. The waterfall is about 101 feet in height and gets its name because of the rainbows that form in its mist during summer. It is a good place for several outdoor activities. The Devils Postpile National Monument offers 21 sites for camping. This place is also safe for hiking, fishing and horseback riding. This monument is open only between mid-June and late October.