Stock Photo - Mumbai, India is featured in this image photographed by an Expedition 14 crewmember on the International Space Station. This view is one of three (frames 8741, 8742 and 8744) acquired within ten seconds of each other as the station passed over India. Mumbai (formerly known as Bombay) is a so-called mega city, with over 21 million people living in the greater Mumbai metropolitan region. Mega cities like Tokyo, New York, Sao Paulo, and Mumbai are also known as conurbations -- large contiguous areas of urban land cover formed from the growth and merging together of previously separate and distinct urban centers. The Mumbai conurbation includes several municipal entities including Bhiwandi, Kalyan, Thane, and Ulhasnagar. Located along the coast of western India on Salsette Island, Mumbai is generally considered to be the most modern of India's cities and is a major economic, transportation, and cultural center. Almost cloud-free conditions reveal the continuous urban land cover of the mega city extending north to south across Salsette Island -- a distance of nearly 50 kilometers. Sanjay Gandhi National Park, bordered on three sides by the urbanized area, is the largest national park in the world located within city limits. In addition to providing a refuge for native flora and fauna, the park also includes two lakes that form part of the Mumbai drinking water system.