Mangalore is the chief port city of Karnataka. It is located about 350 kilometres west of the state capital, Bangalore. Mangalore lies between the Arabian Sea and the Western Ghat mountain ranges, and is the administrative headquarters of the Dakshina Kannada (formerly South Canara) district in south western Karnataka. Mangalore derives its name from the local Hindu Goddess Mangaladevi. Light House Hill is situated in Hampankatta, the heart of Mangalore City. It is the location of two famous educational institutions in Mangalore, namely St. Aloysius College and Kasturba Medical College. This "Light House" was built by Hyder Ali, an erst while ruler of Mysore. The huge watchtower in the hill served as a base for the British, from where many resident commanders of the British Navy would monitor the movement of travelling ships. The cancellation depicts the 18th Century Light House.