Mysterious Roving Rocks of Racetrack Playa

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    The rocks are famous because they move, leaving tell-tale trails in the clay, like this one. This happens at several playa in California and Nevada. There's no record of anybody seeing one of the rocks move, and scientists aren't quite sure how it happens. But they know that it's not the work of animals, gravity, or earthquakes.

    Photo credit: NASA/GSFC/Cynthia Cheung

    To read a feature story on the Racetrack Playa go to:

    NASA Goddard Space Flight Center is home to the nation's largest organization of combined scientists, engineers and technologists that build spacecraft, instruments and new technology to study the Earth, the sun, our solar system, and the universe.

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    Rocha Gustavo, Three Sevens, and 123 other people added this photo to their favorites.

    View 20 more comments

    1. rafallano 56 months ago | reply

      Impressive shot, very well done

      I love

      Congratulations for the EXPLORE!!!

      Well done!!!

    2. A.Alwosaibie 56 months ago | reply

      very beautiful work !

    3. @PAkDocK / 56 months ago | reply

      I really like the light, the idea, the fine composition....congratulations

    4. Σταύρος 56 months ago | reply

      come on tell us !
      I still think its photoshoped,don't tell me people that work @ NASA dont play jokes...:)

    5. Σταύρος 56 months ago | reply

      Look at this one it made a left at albuquerque, lol !

    6. Angiezpics 56 months ago | reply

      WOW that is so interesting and the image is just fabulous.

    7. Soleil is me. 56 months ago | reply

      Greeting from Bangkok, your image so wondeful artwork:)
      INVITED TO MY SPECIAL GALLERY The door of wisdom are never shut but seldom opened.Kornrawiee's Gallery... Invite ONLY

      Have a nice day & be happy:)

    8. 56 months ago | reply

      It's actually a " Rock Sloth" a rock like creature that travels at very slow speeds, almost impossible to see with the human eye. They live off of condensation, and mold that grows on the desert floor. Discovered May 16, 1958 by Edward Van Hoight.

    9. Coco Mault 56 months ago | reply

      Ebb and flo action of the drying Earth? Looks hot out there, but perhaps the tiny bit of shade the rock supplies is enough to slightly cause the sand under it to cool and contract. It warms up, the sand expands slightly, pushing the rock along, and the process starts again.

      Otherwise, my bet is that the rock has feet.

    10. PAL1970 56 months ago | reply

      Gorgeous image, I really like this one, a fine, fine work.

    11. Meinrad Périsset 56 months ago | reply

      I propose to fix a video caméra on the stone or around like that we will discover what happen.

    12. JC Shamrock 56 months ago | reply

      Moved by the power of awesomeness.

    13. Caetanoven 56 months ago | reply

      I imagine it was the work of the water .. and then she was gone by the sun action!

    14. ace586 51 months ago | reply

      water. The landscape experiences severe floods once or twice a year. The surface absorbs very little, so it runs off and moves the rocks.

    15. *NEWMAN* [deleted] 35 months ago | reply

      Saw this many many years ago in a movie from Disney, don know the title in english, in spanish... "El Desierto viviente".
      Its real, and until now, no one discovered how this happens.

    16. *NEWMAN* [deleted] 35 months ago | reply

      look for the movie, the phonomena exist, its real, since many years ago, when no any computers available for the common people.

    17. my_usw 17 months ago | reply

      Why has someone not put a camera on top of one of the rocks? I think they move because the night produces dew on the surface a just like the moon affects the sea, with its gravitational pull. The similar situation happens here..... perhaps when the pull is at its peek. Just a thought! (=

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