Srinagar, Oct. 17 -- After decades of neglect and bureaucratic inertia, the Geological Survey of India's declaration of the Guryul Ravine at Khonmoh, Srinagar as a National Geoheritage Site is a historic recognition not just for Jammu and Kashmir, but for the global scientific community. This ravine, nestled along the foothills of the Zabarwan range which connects Srinagar with Pahalgam, holds within its layered rocks the story of the Permian-Triassic mass extinction, the most devastating biological catastrophe in Earth's history, which wiped out nearly 90 percent of marine species and 70 percent of land species about 252 million years ago. For geologists and paleontologists worldwide, Guryul Ravine is not an ordinary outcrop. It is one o...