USA - California - Racetrack playa - the stones that move.

Racetrack playa is located in the valley of the death a place on the Califórnia desert so harsh that life is almost impossible there, but in a place where life is rare there is someting more that moves across a desert lake leaving a track of it's progress, well for weird as it seems we talking about rocks that move without any intervention of humam. This is one of the most strange phenomenon on planet earth, no one ever recorded the actual movement. but it's visible the track leaved behind some of the rocks have several Kilograms ( Pounds).

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