Mystery and suspense have always been preferred to common sense in humanity.
Strangely, a LAKE in the desert has never been thought to be a worthwhile cosideration when scientists try to figure out the mystery of moving rocks. Neither does COLD seem to be a worthwhile consideration for the scientist (even though it's in the middle of a HOT DESERT). Neither do MUD or TIDE seem to be worthwhile considerations.
Let's take note of some irregular qualities present...
1) large body of water in immediate area.
2) large area of MUD.
3) rocks pushed across the mud.
4) water flows across mud and can become ice.
This is supposed to be a MYSTERY???
How much longer will it take for scientists to discover COMMON SENSE?