The Russian Thunderstone weighing 1500 tons and moved by 400 people and 3 ships

The Russian Thunderstone

The Thunderstone measured 7 m by 14 m by 9 m, and was estimated to weigh around 1500 tonnes.

It was moved 6 km overland to the Gulf of Finland from the marsh in Lakhta, north of the Gulf by dragging it across the frozen Russian countryside during the winter of 1768, a process taking 9 months and requiring 400 men, pulling it upon a metallic sledge
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