Cellular Jail Island, also known as Kala Pani, is located in the Andaman and Nicobar Islands of India. Built by the British in the late 19th century, it served as a notorious prison for political prisoners and freedom fighters. The jail was designed in a unique cellular structure, allowing for strict surveillance and isolation of inmates. Today, Cellular Jail Island is a national memorial and a popular tourist destination. Visitors can explore the remnants of the prison, learn about its history, and witness the sacrifices made by those who fought for India's independence. The site also features a light and sound show that narrates its poignant past.