Carnac is surrounded by fields with thousands of gigantic stones (menhirs) arranged in mysterious alignments and patterns set up over centuries beginning as early as 5500 b.c.
The stones are all different but pretty to look at. 
mnli hypothesis: The stones are all different but pretty to look at.  premise: Carnac is surrounded by fields with thousands of gigantic stones (menhirs) arranged in mysterious alignments and patterns set up over centuries beginning as early as 5500 b.c.