Located within Tra Linh District, Thang Hen Lake is one of the most famous tourist destinations in Cao Bang. The lake is part of a complex of 36 natural lakes situated at an altitude of nearly 1,700 meters, interconnected through a system of underground caves. Among them, Thang Hen Lake is the largest and also the most popular with travel enthusiasts.
This lake is considered one of the most beautiful in northern Vietnam, with jade-green water reflecting the clouds and sky. Surrounding the lake are pristine forests and carpets of blooming wildflowers. Although the water turns slightly murky during the rainy season, the scenery remains breathtaking—like an ink-wash painting nestled in the mountains of Northeast Vietnam.


