During structural restoration work on a Kalyani Chalukya temple in Karnataka's Kalaburagi district, conservationists discovered a series of subterranean vaults lined with lead sheets. These chambers were specifically designed for the cool storage of large quantities of ritual oils and ghee used for temple lamps and anointing ceremonies.
The lead lining, which acted as an early form of chemical preservation and temperature control, helped keep the oils from becoming rancid over decades. This discovery highlights the advanced logistical planning involved in managing large-scale Hindu temple endowments during the medieval period. The restoration team is now working to stabilize the vaults while preserving the unique metallurgical seals found on the stone lids.