Rock 140 ~ Mystery Traveler Rock ~ December 9, 2015 ~ Claremont CA

Just like the rocks that travel mysteriously in the desert. I found this rock today with its evidence trail. This rock has skid marks on two sides at least -- it may have tumbled while traveling. It looks like the other traveling rock had an accident, if I am reading the lower evidence trail correctly.  
Measures approximately 2 1/4".