The stones rotating Death Valley California
Racetrack Playa, a national park of Death Valley, California, is a lake by a dry, dry, famous for its stones that move by themselves: the stones have a size ranging from pebbles to rocks up to half ton and have different shapes and sizes so that they are detached from the surrounding hills.
Their paths are varied, ranging from zig zag very long straights, or even back on themselves, some travel only a few tens of meters to hundreds more.
Because two rocks parallel take different roads? That the wind centers or something like some say there another explanation? No one can give a definite answer.
In the scientific community has long puzzled about what was happening until the CalTech researchers conducted a study that lasted 7 years ending with the affirmation that the rocks, in certain weather situations, rain, fog or humidity make the surface very slippery and winds push the rocks on trails often described as chaotic.
They often move in a single movement of 270 meters.
While no one has ever seen a single of these rocks move, Dr. Robert Sharp has monitored some of these for about six years, noting that some stones move up to one meter per second up to even three kilometers to travel to: they are moved by the wind seems unlikely, given the type of soil.
Dr. Sharp has also put the metal stakes to check the movement of the stones, but even these have represented the obstacles seem more obscure and unknown, oblige these stones to move only in the darkness of the night, and any explanation is insufficient to determine the event.
It seems that the Rangers have seen the rocks move even in dry weather and no wind, perhaps under the natural action of magnetic forces, but never calculated: the rocks move with no wind, no fog, no rain, and absence of external forces verifiable, therefore, now no one can give an explanation of the phenomenon.