Mystery: stones move alone in the desert and leave traces on the ground

If you think you've seen it all in nature, you may still be very surprised. At Racetrack Playa in California's Death Valley, you can find one of these mysteries that can leave mankind racking its brains for centuries.

There, there are rocks that, over time, move, marking a trail with their course. The completely deserted region offers no explanation for the curious fact. Nobody has ever caught the movement of rocks, so there is no way to have clues as to what causes the phenomenon.

Rocks move in different directions, usually without a direct link between more than one stone. Some scholars have already formed theories about the mysterious stones of Death Valley.

The most widely accepted assumption involves wind and rainwater: water reaches the mountains, running down its slopes, and when it reaches the ground it evaporates easily due to the region's high temperatures.

This process transforms the first layer of soil into a rather soft and slippery type of mud. As local geography causes extremely strong air currents to pass through the region, the sum of the two factors could move the rocks, creating tracks across the ground.

In any case, this is only a hypothesis, since to this day no one has been able to prove what really happens there, although the questioning is quite old. Recently NASA sent teams to study the phenomenon. However, the researchers, who promise to continue their studies, found that the wind on the site would not be enough to move the stones.