Who was trespassing on MY LAND today?

Was it large scurrying rats?  EDIT:  NO IT TURNS OUT IT MUST HAVE BEEN HUMANS!


NOTE: I was right.  Took this pic Saturday morning and sure enough there was definitely digging activity on MY LAND WITHOUT MY PERMISSION.  The only permission granted to ANYONE is scheduled for Wed. Nov. 15, 2017.  ANYONE with a copy of the legal survey is well aware of the property lines and knows they are trespassing.

The soil was level with the horizontal ties visible in the picture prior to yesterday and there were ties stacked to the same height against MY garage.