so many changes in direction...
Its swamp gas!
I also am a skeptic of the ice theory.
so many changes in direction...
A review of the weather data showed that a rare winter storm had dropped about 1 1/2 inches of rain and seven inches of snow on the region in late November. The playa was transformed into a shallow lake where the GPS stones recorded movements on sunny days with light winds following nights of sub-freezing temperatures.
James Norris' photographs put it all in perspective. Panes of ice hundreds of feet across and as thin as 1/4-inch thick blew into rocks. The rocks slid along the slushy, slippery mud on trajectories determined by the direction and velocity of the winds.