Walking Moai?

Stones up to 1.5 tons are usually slung on poles for transport. Thirty ton Assyrian winged bulls on sledges rest on short ambiguous objects, some parallel and some perpendicular to the line of motion, which may be wooden rollers or gliders. Sixty ton Egyptian pharaohs are dragged on sledges over wooden planks without rollers, upright and with lubrication. One-hundred ton Egyptian columns on barges are shown lashed to sledges. So suggests Heizer (1966) in his survey of ancient heavy transport. He also notes the propensity of heavy loads to crush wooden rollers and states categorically, " ...the use of wooden rollers cannot be demonstrated for any stone-moving culture in the New World, and at best the evidence is weak for pre-Roman Old World societies".