Chuiyun Tongtian River (垂云通天河), or Hanging Clouds Reaching the Sky River, is an underground karst river characterized by its subterranean passages. The geological formation of the area, shaped by crustal movements and volcanic eruptions millions of years ago, has given rise to typical karst topography within the scenic region. With a total length of 4.5 kilometers and a drop of 380 meters in elevation, it covers an area of over 80,000 square meters.
At the origin of Chuiyun Tongtian River lies a forest-covered area spanning nearly 30 square kilometers. Surface water from the extensive forest converges into a funnel-shaped cavity known as Litian Tongli, resembling an immense natural sinkhole. Flowing down the winding and twisting natural riverbed, this water source forms the vast underground river within Chuiyun Cave, hence the name Tongtian River, meaning “River Reaching the Sky.” The combination of subterranean passages, lush forest cover, and dramatic geological features makes Chuiyun Tongtian River a captivating destination for visitors seeking to explore the wonders of karst landscapes.
Table of Contents
- Basic Information
- Location and Transportation
- Highlights of Chuiyun Tongtian River
- Vlog about Chuiyun Tongtian River
- Other Attractions in Tonglu
Basic Information
| Estimated Length of Tour | Half a day |
| Ticket Price | 108 RMB including admission and boat tour |
| Opening Hours | 8.00 – 20.00 (28th March – 31st October) 8.00 – 16.00 (1st November – 27th March) |
| Telephone Number | 0086-0571-64371618 |
Location and Transportation
Chuiyun Tongtian River is situated in Yaolin Town, Tonglu County, Hangzhou, Zhejiang Province, China. To get there, you can purchase coach tickets to Tongtian River from Hangzhou East or West Railway Station, and after disembarking, the river is a 900-meter walk away. Alternatively, travelers can take a train to Tonglu County and then hire a taxi to reach the scenic area.
Highlights of Chuiyun Tongtian River
Underground Majesty
Chuiyun Tongtian River is a mesmerizing underground karst river. With a drop of 380 meters and spanning 4.5 kilometers, it’s often referred to as the “Ten-Li Long River.” Maintaining a consistent temperature of 18°C year-round, it becomes a popular refuge during the sweltering summer months. Exploring the river on a boat unveils a breathtaking display of stalactites, stalagmites, and various rock formations, crafted over millions of years. Illuminated by carefully placed lights, the caverns resemble a surreal underground tapestry, showcasing the awe-inspiring craftsmanship of nature.
Buddhist Cave
“Dongtian Fokuo,” or Buddhist Cave, is the only accessible area for visitors to disembark and explore on foot during the boat tour of Chuiyun Tongtian River. It boasts three natural wonders known as the “Three Marvels of Chuiyun.” The first marvel is a natural rock formation resembling a map of China, complete with Taiwan and Hainan Island, sculpted from stone clouds. The second marvel is a statue of Guanyin, the Buddhist goddess of mercy, nestled within a Mongolian yurt-shaped rock formation. The third marvel is a natural rock dragon, whose head, body, and tail appear vividly lifelike.
Sky-Piercing Bridge
The Lingyun Sky Bridge stands as a central attraction within the Chuiyun Tongtian River scenic area. Stretching over 300 meters with a height of approximately 150 meters, it soars above the mountain peaks. Walking across the bridge feels like strolling through the clouds, offering panoramic views of the surrounding landscape, from the nearby terrain to the distant horizons.
