Sanmenhai Tiankeng Cluster
三门海
A cluster of underground river skylights in Fengshan County. Boats pass through three connected sinkhole skylights over jade-green water, the highlight of the Leye-Fengshan World Geopark.
Sanmenhai lies in Sanmenhai Town, Fengshan County, north of Bama, about 50 km from Bama's county seat. It is part of the Leye-Fengshan World Geopark. The underground Poxin River links several skylights here. Visitors board boats at the cave entrance and pass through three 'gates' into shaft-like sinkholes. A ring of daylight pours down from above onto jade-green water, and plants hang from the cliff walls. The boat trip takes about one hour. You can also walk the boardwalk to see the Poxin River outlet and Chuanlong Rock. Opening hours are about 08:30–17:30, and the ticket includes the boat ride, per the scenic area's announcements. Boats may be suspended after rain when the water turns murky, so check before setting out. The coordinates refer to Sanmenhai Town, so confirm the scenic area entrance with navigation.
Opening hours
08:30–17:30
Nearby sights
- Baimo Cave
- Poyue Village
- Bama Crystal Palace Cave
- Bainiao Rock
- Renshouyuan Longevity Park
- Bapan Longevity Village
- Panyang River
- Bama Longevity Culture Square