Dabanshan Pass: Driving the old mountain road and the G227 tunnel
Dabanshan Pass is a high mountain pass at an elevation of 3,944m (12,939ft) above sea level, located on the border of Haibei and Xining Prefectures in China's Qinghai Province. Situated within the rugged Qilian Mountains, this crossing is a vital link along the G227 national road, a route steeped in the history of the ancient Silk Road.
The journey through Dabanshan has evolved significantly over the years. Originally, drivers had to navigate a treacherous 9 km mountain track to reach the summit. Due to the high risk and steep gradients, a modern tunnel was constructed to bypass the most dangerous sections. Today, travelers can choose between the efficiency of the tunnel or the scenic challenge of the original high-altitude road.
| Road facts: Dabanshan Pass | |
|---|---|
| Elevation (Pass) | 3,944m (12,939ft) |
| Old Road Length | 9 km (5.6 miles) |
| Tunnel Length | 1.6 km (1.0 mile) |
| Old Road Features | 7 sharp hairpin turns / Steep gradients |
| Route Number | G227 National Road |
The Old Dabanshan Road: 7 Hairpin Turns
Before the tunnel was completed, the drive to the summit was a major test for vehicles and drivers. The old 9 km section is famous for its 7 tight hairpin turns and sustained steep gradients. Because of the extreme danger posed by ice, snow, and the narrowness of the track, most traffic was diverted to the new G227 tunnel. However, the old road remains open and drivable for those looking for a scenic detour. It branches off from the modern highway, climbing toward the summit where Silk Road memorials, including a statue of Marco Polo, mark the historical significance of the pass.
The Dabanshan Tunnel: A modern bypass
To ensure year-round transit through the Qilian Mountains, the 1.6 km Dabanshan tunnel was built as a toll road. This modern engineering feat bypassed the most difficult parts of the ascent, significantly reducing travel time and improving safety. On the descent from the tunnel, there is a popular lookout stop where local traders set up stands. This viewpoint offers a wide panorama of the high-altitude landscape and is a common resting point for travelers on the G227.
When is the Dabanshan Pass open?
Due to its elevation near 4,000 meters, the pass is heavily affected by winter weather. The road is typically impassable from late October through late June. While the tunnel provides better accessibility, heavy snowfall can still lead to temporary closures of the entire G227 section. The exact opening dates each year depend entirely on the rate of snowmelt and local maintenance efforts.
Road suggested by: Hugh Wilson
Pic: 普通M仔