Moving heavy stones is child's play if you have the right technique. Here's a video of my 4 Year old son lifting a 250Kg stone onto the top of a wall we're building. With this 5m lever, I've lifted a 420Kg stone off the floor and swung it through one metre or so each time with relative ease. You just need a long enough lever, strong chains, very stout fulcrum and a few buckets of gravel as counterweights. Ok, if you prefer, you could just hire a digger or crane to do the job in a fraction of the time :-)

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