Archaeologists in the Bhadradri Kothagudem district of Telangana have reported the discovery of a late 11th-century temple that features an unprecedented form of metallurgical protection. The temple, built during the early Musunuri Nayaka period, has its primary sanctum's exterior walls clad in a thin, resilient layer of zinc-rich alloy. This metallic coating appears to have been used to shield the intricate sandstone carvings from the corrosive effects of the region's high humidity and monsoon rains.
Laboratory analysis of the cladding has revealed a sophisticated smelting process that indicates advanced metallurgical knowledge for the time. This 'shielded temple' is the first of its kind found in South India, suggesting a localized technological innovation that did not become widespread in later centuries. The site also yielded several inscribed copper plates detailing the land grants made to the temple's artisans, providing a rare glimpse into the economic and social structures of the Musunuri Nayaka confederacy.