The large rocks used to build the walls of many Japanese castles were transported by rolling them over a path of round logs. They were pulled by teams of tens to hundreds of men, synchronized by the shouts of someone sitting on the rock.

The Nagoya castle is famous for an enormous rock, 6 meters long and 2.5 meters tall, which was transported this way. It is called the Kiyomasa stone because it was brought to the castle under the direct supervision of the famed warlord Kato Kiyomasa, who was sitting on it, shouting to synchronize the workers…

Nagoya Castle, Nagoya

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