Anuradhapura Lovamahapaya foundation: 1,600 monolith granite stone pillars and copper roofing?

Lovamahapaya (the Brazen Palace) in Anuradhapura, constructed in the 2nd century BC by King Dutugemunu as a multi-tiered monastic chapter house, rested upon a grid of 1,600 rough-hewn granite monolithic pillars arranged in 40 parallel rows. These stone pillars functioned as foundation pile caps, elevating the timber-framed superstructure off damp ground to prevent wood rot while supporting eight upper residential floors and a copper-bronze tile roof. Although successive fires destroyed upper timber tiers over centuries, the surviving 1,600 granite pillars remain standing in precise alignment.