Chittagong city is the main Indian Ocean port of Bangladesh. It is situated 19 km north of the mouth of the Karnaphuli River, in the south east of the country and has a population of around 2,000,000. It is a major communications centre and is linked by rail with Dhaka and Comilla, by road with Feni and Comilla, and by air with Dhaka, Jessore, Cox's Bazaar, and Calcutta. The second most important industrial city in Bangladesh. Rice is the most important crop and tea is grown on low hills that are unfit for rice cultivation. Chillies and vegetables are also grown, and cane and bamboo are economically valuable forest products.