The largest stone ever moved by man, as far as I know, is the stone moved to St. Petersberg to serve as the base for the equistrian statue of Peter the Great. It was called the Thunder Stone, and was moved four miles by land from a swamp in Finland, to a waiting barge. It weighed 1250 tons, by far the heaviest stone known to have been moved by man. It traveled by barge to its resting place in St. Petersburg, and was carved to it's final shape as it was being moved. It started out as 1500 tons, and was something like 1250 tons when in its finished form.
It was moved by placing metal tracks under the stone. The tracks had grooves running their length, and were supported by 6" brass balls on a supporting track. There were basically ball bearings, in a time before ball bearings had been invented. Two large capstans were turned by teams of 36 men, to move the stone 150 meters per day. They did the move in winter, so the soft ground would support the weight by being frozen. They only had 100 meters of track, so the track has to be dissembled behind the stone and reassembled in front of the stone. A comparison with other large stoves moved (heavier ones were cut, but not moved) in antiquity shows:
1000 tons, Ramsseum statue: 1000 tons, moved 170 miles
800 t each, three foundation stones atBaalbek, Lebanon,
700 t, Collissi if Memnon, transported 420 miles by land
600 t, Alexander Column, St. Petersburg
575 t, Western Stone of Temple, Jerusaleum
100 t, Puma Punku stones, at 12,000' elevation in Bolivia
26 t, Stonehenge sarsen stones, England
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