That is simply amazing !!!

I want to go to Death Valley and watch rocks.......


Thanks so much for sharing ...

I think they only move during infrequent rainstorms. The lake bed they are in is just dried mud, and a quick downpour will turn the surface into a type of watery clay called slip. Once the stones are on this slippery surface it only takes a strong wind to blow them some distance in one go - just like curling stones on ice.
As the mud is only 1/2" thick it will leave a little track behind it and build up at the edges.

That's my view anyway.