Racetrack Speed Demon

Moving rock at the race track in Death Valley. These rocks somehow manage to move and score the playa of the valley floor.

 

For more information:

 

jonsullivan.com/racetrack.php

 

geology.com/articles/racetrack-playa-sliding-rocks.shtml

 

www.nature.nps.gov/geology/usgsnps/deva/ftrac1.html

 

Done