Madura is a large island outside East Java, 5.290 square kilometers, about 160 km long and 35 km wide. It is separated from Surabaya by the narrow Madura strait, and is administered as a part of the East Java district. Main income is fishing, salt, cattle and agriculture. The local capital is Pamekasan. Number of inhabitants is about 3-4 million, and the population is considered to be an unique ethnic group like Javanese and Sundanese. Madurese is also a separate language.
Surabaya is East Java’s largest and Indonesia’s second largest city with a population somewhere between 2 and 3 million. Traditionally the city is one of the most important commercial port and trading centers in South East Asia. The harbor is Indonesia’s second largest after Tanjung Priok in Jakarta, protected by the Madura island just east of Surabaya.