This place is famous for haunted stories and mythical characters, Zinn. Although locals believe in their existence and offer prayers, put up wishes every Thursday. It's crumbling but has a magestic appearance. The tunnels at the base has a cold and other world feeling. Quiet, distant and beautiful. By the Grace I personally didn't face anything that's negative or supernatural or ghostly but felt good about the place. I'll recommend people to visit this place at least once when you're in Delhi.