What is hinge stone?

Hinge stone refers to a large stone slab or block that allows a movable structure to pivot or rotate around an axis, such as a gate, door, or drawbridge. The hinge stone is usually made of durable materials like granite, limestone, or sandstone and is often heavy to support the weight of the structure. In ancient times, hinge stones were commonly used in the construction of fortresses, castles, and other fortified structures. Today, hinge stones are still used in the construction of traditional buildings, especially in rural areas where wooden doors or gates might not be as durable or secure.