This remarkable technique is called a self-supporting wooden arch structure. Its core principle is simple: thin bricks are arranged side by side with cement as an adhesive. The secret lies in the precisely designed layout that naturally forms an arch. This curved shape evenly distributes the weight above to both sides, much like an arch bridge does. As a result, the staircase stands firm without any external support, saving materials while showcasing the wisdom and craftsmanship of ancient build