Mile Marker 666???? Where are you???? Previously, when Mile Marker 666 was placed at this location, it would not last long before it would become mysteriously missing. Each time it was replaced, in a few weeks, it would quietly disappear again. The highway department finally quit replacing it. I backtracked from 667 to this point, placing the cache near where the marker should be. Maybe as you find the cache, you could shout 666 at the passing cars so they know where they are at... Maybe not.