Nui Coc Lake is a reservoir with the area of 25km2, 23m depth. The lake is surrounded by mountains and includes 89 islands, concealing mysterious legends, some covered with trees and others housing flocks of storks or mountain goats. Nearby the lake, Coc Mountain stands imposingly amid the blue sky, the bright sunshine over every blade of grass and twig, all creating marvelous and splendid scenery.

The lake comprises many islets; some are covered with trees, some with flocks of birds, and others with mountain goats. About 40 species of birds and 15 species of mammals have been recorded in the reservoir area.

It's a pretty stretch of water, and is a major drawcard for Hanoi residents looking to get away from it all. On summer weekends it can get particularly crowded. A one-hour, circular motor-boat tour of the lake is the thing to do and cost about 200,000d. You can use the water park's swimming pool for 20,000d, and also rent rowboats. It could be worth a visit if you're travelling to Ba Be National Park, with your own wheels, and fancy a dip.

If you have time, cruise to visit Co Island covered with tree, enjoy the view of overall Nui Coc Lake.