black hole of calcutta :
- n a dungeon (20 feet square) in a fort in Calcutta where as many as 146 English prisoners were held overnight by Siraj-ud-daula; the next morning only 23 were still alive
News & Articles
- Bringing caving to the masses
Exploring Claustral Canyon in Australia is an escapade reserved for only the most intrepid adventurers, requiring visitors to rappel down a mile-long staircase of three steep waterfalls nicknamed “The Black Hole of Calcutta.” But if Luke Farrer has his way, a descent into the 50-million-year-old natural wonder will be accessible to anyone.
Nov. 13, 2013 - Boston.com