The Nang River is a breathtaking waterway that winds through Ba Be National Park, offering visitors spectacular views of tropical forests and towering karst mountains. This pristine river, surrounded by dense vegetation, showcases the park’s untouched natural beauty and rich biodiversity.
Exploring Ba Be National Park by Boat
Ba Be National Park, one of Vietnam’s most unique ecosystems, is intricately connected to its vast river network. At its heart lies Ba Be Lake, Vietnam’s largest natural freshwater lake, fed by the Nang, Ta Han, and Bo Lu Rivers. This interconnected system plays a crucial role in regulating the local climate and sustaining diverse flora and fauna.

The Geological Wonders of the Nang River
The Nang River has sculpted many of the park’s most stunning geological formations, including:
- Puong Cave – A mesmerizing limestone cave home to thousands of bats.
- Dau Dang Waterfall – A dramatic cascade surrounded by lush forests.




Taking a boat tour on the Nang River allows travelers to experience the park’s striking landscapes, from tranquil waters to awe-inspiring limestone cliffs.
Ba Be Lake: The Beating Heart of the River System
Ba Be Lake stretches approximately 8 km in length, with a width of up to 2 km and depths ranging from 20 to 25 meters. Known locally as “Slam Pé” (Three Lakes), it consists of three interconnected sections: Pe Leng, Pe Lu, and Pe Lam.


The Nang River acts as both an emissary and a tributary to Ba Be Lake, regulating water levels across different seasons. This dynamic balance is essential for maintaining the park’s fragile ecosystem.
The Nang River – A Vital Yet Threatened Ecosystem
The Nang River is not just a scenic marvel—it is a lifeline for local communities, providing water for agriculture, transportation, and daily life. However, human activities and environmental changes pose threats to this delicate ecosystem. Conservation initiatives are in place to protect water quality, biodiversity, and the sustainability of Ba Be National Park.
By supporting sustainable tourism and responsible travel practices, visitors can help preserve this natural treasure for future generations.