The story
Udayagiri was first built in the 17th century and rebuilt by Maharaja Marthanda Varma in the 18th. The work of 1741 to 1744 was supervised by Eustachius De Lannoy, a Flemish naval commander of the Dutch East India Company who later served as chief of the Travancore army. While Padmanabhapuram was the capital this was the rulers' most important military barracks. Its foundry cast guns, and prisoners from the campaign against Tipu Sultan were confined here for a time. In 1810 Company troops entered Travancore through the Aralvaimozhi pass to put down the rebellion led by Velu Thampi.
Sources: Wikipedia: Udayagiri Fort · Trawell: Kanyakumari places








