12,000-year-old petroglyphs in India depict sacred symbols of global importance

12,000-year-old petroglyphs in India depict sacred symbols of global importance: One of the most significant archaeological finds of recent times was the discovery of hundreds of petroglyphs (rock carvings), in the Ratnagiri and Rajapur area of the state of Maharashtra in western India. The petroglyphs have been etched on the rusty-red coloured laterite rocks that dominate the flat hilltops of the Konkan coastline.