Easy! Just lay the first one. Measure the contour. Get your chisel out and start chiseling. Dry fit, chisel some more. Repeat a thousand times. Move on to the next rock. Once done for the first rock just repeat for the next rock layer. Except this time you gotta fit two sides, then lift the rock and dry fit again until it fits. Try non undercuts.
Seriously, I think a good way to do it is to have many men stand on the rock over sharp sands and just wiggle the rock until it grinds the rocks below and itself onto no motion at all.
Easy! Just lay the first one. Measure the contour. Get your chisel out and start chiseling. Dry fit, chisel some more. Repeat a thousand times. Move on to the next rock. Once done for the first rock just repeat for the next rock layer. Except this time you gotta fit two sides, then lift the rock and dry fit again until it fits. Try non undercuts.
Seriously, I think a good way to do it is to have many men stand on the rock over sharp sands and just wiggle the rock until it grinds the rocks below and itself onto no motion at all.
I wonder if the odd earthquake, over time, grinds the mismatched surfaces a bit too.
I assume its only the hardest of granites. LOL.