Ban Chang Lake - "Da Lat" of Bac Kan province Ban Chang Lake is located in Duc Van commune, Ngan Son district, Bac Kan province, 6km north of the district center, bordering National Highway 3 heading to Cao Bang. Surrounding the lake are lush green pine forests, mixed with villages of Tay and Nung ethnic people... creating a vivid picture. The lake is semicircular, with an ideal terrain, located in a valley. It is an irrigation lake with an area of ​​about 40 hectares, providing irrigation water for more than 100 hectares of agricultural land in neighboring communes. The lake is located in the middle of the green mountains and forests of Duc Van commune like a green "machine" that regulates the climate here. In the middle of the lake, it is easy to see that the small islands still retain their wild beauty, the trees grow lush green, there are many types of fish in the lake, the water surface is clear and airy...