Home The site of the NTPC’s Tapovan-Vishnugadh hydropower project. A blast in one of the tunnels has been cited as a probable reason behind the cracks in buildings. Photo by Ministry of PowerWikimedi The site of the NTPC’s Tapovan-Vishnugadh hydropower project. A blast in one of the tunnels has been cited as a probable reason behind the cracks in buildings. Photo by Ministry of PowerWikimedi