The mysterious rocks which race across the dry lakebed known as the Racetrack in Death Valley 7

lakebed barren nevada desolate desert panamint dryness lake-bed 1080p dry dirt remote flat landscape geological lonely geology mud rocks mountains california background mountain lake rock stone racetrack america running playa moving mysteriously phenomenon stones north travel cracked sky clouds death nature northern hot rolling concept sliding national pattern puzzle united brown park bed summer texture states seasonally blue black sailing