Sixty hot springs are spread over 18 regions in the west coast of Maharashtra, India. The area is covered by Deccan Basalts. Periodic water sampling was done for more than 5 years from Tural and Rajvadi hot springs along with waters from other deep wells for hydrochemical and isotopic analyses to study the relation between seismicity and hydrochemistry. Residence time of hot spring waters was estimated using the 14C dating.

Present gold-producing centres of India have witnessed ancient and modern mining activities. The presence of wood logs, ash, charcoal and pottery in ancient gold mines of Kolar, Hutti and Uti suggests fire setting was the main mode of gold exploitation of ancient miners.