why not just try a tried and true method of printing on foamcore so you have a model base to work from

Maybe this will infact answer the age old q, how did they make stonehenge...

The answer: Someone in the way distant future designed the original layout for stone henge with puzzel pieces.
Some one else in the near future, who built a time machine, goes into the future, gets the stl, back to the present where there stone 3d printer is, then travels back to the past and prin
ts the stones there and then.
Then returns to the near future to watch everyone ponder about how on earth it was made!

"I think that the problem *may* have been, that there was a Stonehenge monument on the stage that was in danger of being *crushed* by a *dwarf*. Alright? That tended to understate the hugeness of the object."

-Davit St. Hubbins in "This is Spinal Tap"

Here's a challenge: someone take this and put all the pieces on a thin base layer that snaps together like puzzle pieces and then scale the whole thing up.