News Nation special: Kalapani unveiled!

Situated in Andaman and Nicobar Islands, Cellular Jail is one of the toughest jails to survive in. Many notable dissidents such as Batukeshwar Dutt and Veer Savarkar, among others, were imprisoned here during the struggle for India's independence. Currently, the complex has been transformed into a national memorial monument. On National Martyrs Day, News Nation takes you through the jail.