Yunyang Longgang Geopark Guide | The First Jar & Glass Bridge

Yunyang Longgang National Geopark sits deep in the Three Gorges reservoir area of Chongqing Municipality, a region where karst geology has sculpted some of China’s most dramatic natural forms. The park’s centerpiece – the Longgang Tiankeng (Heavenly Pit) – plunges over 335 meters into the earth with near-vertical walls, a spectacle often called “The First Jar Under Heaven.” Above the pit, the Cloud Bridge (Yun Duan Lang Qiao) extends 26.68 meters from a cliff at 1,010 meters altitude, giving visitors a glass-floored view into the canyon. For travelers interested in geology, adrenaline experiences, or quiet mountain landscapes, this park offers a rare combination of deep karst features, high-altitude grasslands, and ancient cave systems.

Why Visit Yunyang Longgang National Geopark

This park is not a typical scenic spot with manicured paths and gentle slopes. It is a geological showcase where you can see a complete karst landscape cycle: sinkholes, natural bridges, underground rivers, stone forests, and towering limestone peaks.

The Longgang Tiankeng alone is one of the largest and most vertical sinkholes in the world. Unlike many tourist sites where you look down from a safe distance, here you can stand on a glass skywalk that projects over the void – a design that forces you to confront the drop directly.

Beyond the main pit, the park covers about 296 square kilometers (roughly 114 square miles). This means you can spend a full day moving between distinct zones: the cliffside trails around the Cloud Bridge, the Shisun River valley, the Da'an Cave system, and the Qishan Grassland at around 1,600 meters. Each area looks and feels different, so the park caters to multiple interests within one trip.

Unique Geology

The Longgang Tiankeng formed when an underground river dissolved limestone over millions of years, eventually causing the cave roof to collapse. The result is a near-circular pit with sheer walls. This type of feature – a tiankeng – is rare globally and tends to occur only in regions with thick, soluble limestone and high rainfall.

The Chongqing area, with its humid subtropical climate and extensive karst, is a natural laboratory. The park also includes stone forests (remnants of ancient karst pillars) and natural bridges, all of which show how water erosion changes the landscape over time.

The Cloud Bridge Adrenaline

The Cloud Bridge (also called Yun Duan Lang Qiao) is a horseshoe-shaped glass cantilever bridge. According to local sources, it extends 26.68 meters from the cliff edge. The floor is transparent, giving a direct view of the canyon floor far below.

For visitors comfortable with heights, this is the park’s signature experience. The bridge sways slightly in the wind – a normal design feature – but anyone with vertigo or fear of heights should assess their comfort level before stepping on.

Diverse Landscapes in One Park

Because the park is large, you can move from the stark, rocky edge of the pit to the peaceful green pastures of Qishan Grassland. The Shisun River cuts through the canyon, with clear water and unusual rock formations along its banks.

Da'an Cave offers an underground world of stalactites and stalagmites, with an underground river flowing through parts of it. This variety makes the geopark suitable for a full-day excursion, especially if you enjoy alternating between open viewpoints and enclosed cave environments.

Key Attractions and Highlights

Longgang Tiankeng (The First Jar Under Heaven)

The main attraction is the sinkhole itself – 335 meters deep, 330 meters in diameter at the top, with walls that are almost vertical. From the trail along the rim, you can look down into the dark pool at the bottom. There is no path to the bottom for ordinary tourists; the best views come from the rim and the glass bridge.

Cloud Bridge (Yun Duan Lang Qiao)

This glass skywalk extends out from the cliff. It is often described as one of the longest glass cantilever bridges in China. The structure is horseshoe-shaped, meaning you can look directly down as well as out across the canyon. The glass has a slight surface texture to prevent slipping, but it remains transparent. On misty days the bridge appears to float in the clouds.

Shisun River (Stalagmite River)

A valley with sculpted limestone pillars and a clear stream. The walking path follows the river, passing under natural arches and between steep walls. The water level varies by season – spring and autumn are usually best for clear water and moderate flow.

Da'an Cave

A large karst cave with multiple chambers. The cave is lit with colored lights to highlight stalactites, stalagmites, and flowstone. An underground river runs through the lower level. Visitors walk on elevated paths that stay dry. The cave maintains a constant cool temperature, so bring a light jacket even in summer.

Qishan Grassland

At an altitude around 1,600 meters, this grassland offers a high-altitude pasture with wildflowers in spring and early summer. It is a calm contrast to the dramatic cliffs. You may see local Tujia herders with sheep. There are no major facilities here, so carry water and snacks if you plan to walk across the grassland.

Best Time to Visit and Weather

The park is open year-round, but conditions and visibility vary significantly. According to the provided FAQ, the best months are April through May and September through November. During these periods, temperatures are mild (10°C to 25°C / 50°F to 77°F) and rainfall is less frequent. The air is clearer, which improves both the view from the glass bridge and photo quality.

Summer (June–August) is cooler than Chongqing city lowlands because of the 1,100-meter altitude, but afternoon thundershowers and fog are common. The fog can actually enhance the sense of mystery around the Cloud Bridge – but it also means you might see very little of the canyon floor. If your main goal is the view, aim for a clear forecast.

Winter (December–February) brings cold temperatures, often below 5°C (41°F) during the day, and occasional snow. The glass bridge may be icy; check with park authorities before visiting in winter. Autumn is arguably the most photogenic, with clear skies and colorful foliage on the slopes.

Who Should Visit and Who Might Skip

Best suited for:

• Geology enthusiasts who want to see a world-class tiankeng without traveling to the more remote sites in Guangxi or Guizhou.
• Adventure travelers who enjoy glass walkways, cliffside trails, and the adrenaline of heights.
• Photographers looking for dramatic landscapes – mist, deep canyons, rocky textures.
• Families with older children (teenagers) who can handle moderate walking and glass-floor attractions.
• Visitors with a full day to spare from Chongqing city, who are not afraid of long drives (the park is about 4–5 hours by car from downtown Chongqing).

May not suit:

• Anyone with severe vertigo or fear of heights – the glass bridge is unavoidable if you want the best views.
• Travelers with mobility issues – the park has stairs and uneven paths; there is no indication of wheelchair accessibility.
• Those looking for a quiet, non-commercial nature experience – the park has ticket gates, organized paths, and crowds on weekends.
• People on a tight schedule who can only spare a few hours – the park is large, and rushing is not recommended.

How to Get There and Route Logic

The geopark is located in Yunyang County, Chongqing Municipality, about 300 kilometers northeast of downtown Chongqing. Most visitors start from Chongqing city and drive via the G42 Expressway (Hurong Expressway) to Yunyang exit, then follow county roads to the park. The drive typically takes 4 to 5 hours each way, not including stops.

Public transport options exist but are less direct: take a long-distance bus from Chongqing to Yunyang county seat, then transfer to a local bus or hire a taxi for the remaining 40–50 kilometers to the park. Verify the bus schedule in advance because services may not run frequently.

If you are traveling within the Three Gorges region (e.g., from Wanzhou or Fengjie), you can reach Yunyang by bus and then proceed to the park. Route planning should account for mountain roads that are narrow and winding in some sections.

Photography Tips

• Best light: Early morning (shortly after opening) and late afternoon just before sunset. The low angle of the sun highlights the textures of the rock walls.
• Mist: On foggy days, the Cloud Bridge creates a floating effect. Use a telephoto lens to compress the layers of mist and distant peaks.
• Depth of field: For the tiankeng, stand at the rim with a wide-angle lens to show the scale. Include a person in the frame for size reference.
• Filters: A polarizing filter helps cut glare from the glass floor. A neutral density filter is useful if you want to blur the flow of the Shisun River.
• Drone policy: Drones are almost always restricted in Chinese geoparks, especially near glass bridges and crowded areas. Do not fly without explicit permission – likely not granted.

Safety Tips and Considerations

Altitude: The park base is around 1,100 meters, and Qishan Grassland reaches 1,600 meters. This is not high enough to cause altitude sickness for most people, but sensitive individuals may feel slightly breathless during exertion. Stay hydrated, and take breaks on the stairs.

Cliff edges: Trails have railings, but the rock faces are unprotected in some spots. Stay on the designated path, and never lean over barriers.

Glass bridge: Wear non-slip, closed-toe shoes. Heels or flip-flops are unsafe. The bridge may be slippery when wet. If you have a fear of heights, consider starting from the center and moving outward slowly. Do not run or jump.

Weather: Rain makes stone steps slick. Bring a raincoat (umbrellas are difficult in wind). In winter, ice can form on paths and the bridge – check conditions before driving.

Cave: Inside Da'an Cave, the path can be damp. The cave is dark except for artificial lights – use your camera flash sparingly and hold the handrail.

Food and water: There are snack stalls near the main entrance and at the glass bridge area, but options are limited. Pack a lunch and plenty of water, especially if you plan to hike to the grassland or Shisun River section.

Frequently Asked Questions

Where is Yunyang Longgang National Geopark located?
It is located in Yunyang County, Chongqing Municipality, deep in the Three Gorges reservoir area.

What is the "Cloud Bridge"?
It is a horseshoe-shaped glass cantilever bridge built on a cliff at an altitude of 1,010 meters. It extends 26.68 meters outward, offering a full view of the canyon below.

How deep is the Longgang Tiankeng?
The pit is over 335 meters deep, with nearly vertical walls.

What is the best time to visit?
The best months are generally April to May and September to November when the weather is mild. Summer (June–August) is cool but can be rainy or foggy.

Are there hiking opportunities?
Yes, the park features extensive ecological trails along the cliffs and through the forests, particularly around the Cloud Bridge and Shisun River areas.

Do I need to buy tickets in advance?
Tickets are likely available at the gate, but during peak holidays (May Day, National Day) expect large crowds. Check online platforms for advance reservation systems.

Is there accommodation inside the park?
The source data does not mention on-site lodging. Most visitors stay in Yunyang county town, which has several hotels.

Can I visit with children?
Yes, but children under 120 cm may be restricted on the glass bridge for safety reasons. Supervise children closely near cliff edges.

What should I wear?
Sturdy walking shoes, layers (mornings and evenings can be cool), and weather-appropriate outerwear. Sun protection is necessary in clear weather.

Final Thoughts

Yunyang Longgang National Geopark delivers a concentrated dose of dramatic karst scenery in a part of Chongqing that receives fewer international visitors than the Wulong area. The combination of the deepest tiankeng in the region, a long glass skywalk, and a variety of secondary features (river valley, cave, grassland) makes it a strong candidate for a one- or two-day trip from Chongqing.

While the lack of detailed public transport and permit information means you need to do some preparation on your own, the park itself rewards those who make the journey with landscapes that feel ancient and powerful. For travelers who plan their schedule carefully – picking the right season, preparing for the drive, and accepting the limits of available online information – this geopark is a memorable stop in China’s rich geological mosaic.