“ Along the picturesque Middle Fork of the San Joaquin River at 2,300 meters (7,600 feet) on the western slopes of the Sierra Nevada lies Devils Postpile National Monument. The 324-hectare (800-acre) monument near the resort community of Mammoth Lakes includes one dominant feature: a formation of columnar basalt known as Devils Postpile. Another important feature in the area is Rainbow Falls. Pumice is the dominant rock-type encountered, but basalt, andesite, rhyodacite, and granite lie just under the surface and crop out in many places. ”

“ The iron present in Soda Springs water oxidizes on exposure to the atmosphere and stains river gravel a reddish brown.
4
SAFETY
For your safety, remember that there are hazards in the mountains that usually do not exist in the city. Stay on designated trails; these are the safest places to hike. ”