As someone who's moved a lot of machinery the hard way (i.e. not paying someone else to do it with a fork lift) I like the stone rollers and wood track the best. One dude with a pry bar can roll a >3-ton (per the manufacturer, not just a guess) mill sitting on rollers sitting on 2x4s sitting on rough ground (protip: vary the thickness of the lumber depending on how much you want it to conform to the ground). A 100+ people should have no problem rolling a 40-ton stone if said stone is sitting on a wood and roller sandwich. If you have a 10yr project deadline you could build a few miles of track a year, get the whole village together, roll the stone a few miles over the course of a week then throw a party to celebrate how far you've moved the stone then leave it to sit for 6mo and do it again.