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Riau, Indonesia (0.94001 101.65562)
In general, the geography of Riau consists of mountains, lowlands, and islands. The mountain area lies in the western part, namely the Bukit Barisan Mountains, near the border of West Sumatra. The elevation decreases towards the east, making most of the central and eastern part of the province covered with lowlands. Off the eastern coast lies the Strait of Malacca where several island lies.