Out of curiosity, I'm going to take a look in the forest behind my place and see if there are any similar patterns around here. The rain might be an issue though...
Feeling lost? Rocks can point the way
Night has fallen, and you are lost in the middle of an unfamiliar desert. There are ways to find your bearings by looking up at the stars. But how about looking down at the rocks?
According to Leslie McFadden of the University of New Mexico, there may be a kind of compass in the alignment of cracks in certain rocks.