Lange Familly Cemetery on US HWY 87

This is one of the more unusual things I have found in my travels.  Not to far from Cherry Springs on the west side of US Highway 87 there is actually a cemetery in the bar ditch beside the highway.  The cemetery is
marked with a single vertical monument marked LANGE and is enclosed
inside a chain link fence.  There appear to be five burial locations inside the fence, each is covered with a concrete slab.