Lifting bosses or handling bosses are protrusions intentionally left on stones by masons to facilitate maneuvering the blocks with ropes and levers. They are an important feature of ancient and classical construction, and were often left behind, despite having fulfilled their purpose.
Lifting bosses or handling bosses are protrusions intentionally left on stones by masons to facilitate maneuvering the blocks with ropes and levers. They are an important feature of ancient and classical construction, and were often left behind, despite having fulfilled their purpose.
Source: Wikipedia "Lifting boss" · CC BY-SA 4.0
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