Hoàn Lão
Introduction Hoan Lao'''Hoàn Lão''' is the capital of Bố Trạch District, situated via north-eastern Quảng Bình, is located about 13 km north of Đồng Hới.The township (thị trấn) is located about 30 km east of Phong Nha-Kẻ Bàng National Park a UNESCO Heritage Site.Hoàn Lão covers 5,70 km2 and had a population of 7,372 in 2012.
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