(https://steemitimages.com/DQmSp643QQwosYdhjYfwzDtS2fqFSQYReXaVGE8yreCcmLw/image.png

On this dry lake bed in Death Valley Natioal park, which is almost compleatly flat with cracked mud, has rocks, some weighing hundreds of pounds, sliding across the sediment, leaving furrows in their wakes, but no one has actually witnessed it. Its best to just gaze in the wonder.