Ongoing restoration work at a 12th-century Shiva temple in Vidisha, Madhya Pradesh, has uncovered a series of subterranean acoustic chambers beneath the main 'Mandapa' (hall). These chambers appear to have been specifically engineered to amplify the frequency of traditional ritual bells and Vedic chants.
The temple, a masterpiece of the Bhumija architectural style favored by the Paramara dynasty, was suffering from structural seepage. The stabilization project has allowed researchers to map the sophisticated sound-engineering techniques used by medieval Indian architects to create a sensory-rich spiritual environment.