Weighing more than 17 tons, this stone is a mystery. It was used for food storage thousands of years ago and still stands at the same spot.
More information http://www.sierranevadageotourism.org/content/rocking-stone-tower/sie553099B05E7E2166E
Address 108 River Rd, 96145, United States
Coordinates 39°10'2.705" N -120°8'42.594" E