Why not "The Megalith Project"? Then it's applicable to more than just Stonehenge and yet can be focussed on Stonehenge as being the most well-known example. Also, I would drop the bit about ropes. How about making it:
"To Demonstrate an Effective Method for the Transportation of Megalithic Stones"
or a bit snappier:
"The Efficient Transportation of Megalithic Stones"