Luoji Mountain 99 Li: World's Largest Hot Spring Waterfall in Liangshan, Sichuan

Why This Waterfall Deserves Your Attention

Most hot springs are static pools. Luoji Mountain 99 Li (螺髻九十九里温泉瀑布) breaks that mold with a continuous cascade of thermal water that falls over cliffs, through caves, and into natural basins.

In 2013, the World Record Association certified it as the world’s largest hot spring waterfall—a title based on the sheer volume and uninterrupted flow exceeding 20,000 cubic meters daily. The setting inside a deep valley in Sichuan’s Liangshan Yi Autonomous Prefecture makes it a rare place where you can bathe under a waterfall while surrounded by primeval forest and karst formations.

Located about 45–50 kilometers from Xichang, this National 4A-rated attraction combines natural wonder with Yi cultural traditions. The hot spring water issues from underground at temperatures between 58–68°C and cools to a comfortable 39–40°C at the waterfall outlets. Unlike typical geothermal baths that are heated artificially, this is a living water system that circulates through cliffs and pools, constantly refreshed by the mountain stream.

Where the “99 Li” Name Comes From

The Chinese term 99 Li (99 里) refers to a distance of about 50 kilometers. One li is roughly 0.5 kilometers. The name suggests that the scenic area extends for nearly 50 kilometers, with each li offering a different wonder. In practice, the core hot spring waterfall zone is more concentrated, but the surrounding Luoji Mountain area contains additional trails, forests, and smaller falls.

Understanding the “Ice and Fire” Phenomenon

How Two Temperatures Meet

The defining experience at Luoji Mountain 99 Li is the merging of hot spring water with ice-cold mountain runoff. Snowmelt from nearby peaks flows down the valley and meets the thermal water as it cascades over rocks. In some pools, your body feels warm while your head is exposed to cool mountain air. The term “Ice and Fire Two Heavens” (冰火两重天) describes this contrast.

Living Water vs. Static Pools

Most commercial hot springs recirculate water through filtration systems. Here, the water flows continuously from natural outlets, passes through pools and basins, and drains into the river.

This means the water is constantly replaced and contains a higher concentration of dissolved minerals, particularly radon, fluorine, and hydrogen sulfide. These compounds are said to benefit skin conditions, arthritis, and fatigue—but the primary appeal for most visitors is the sheer novelty of bathing in a waterfall.

What Makes This Place Unique

Six Hot Spring Islands

The collision of hot and cold water has formed six small islands within the stream. These are natural rock formations covered in moss and vegetation, separated by channels of warm and cool water. Visitors can wade from one island to another, each offering a slightly different temperature and depth. The steam rising from the water creates a haze that makes the islands appear to float.

The Hanging Hot Springs (Wall-Hanging Springs)

Along the cliff face, several hot spring outlets emerge at different heights. Local developers have carved pools into the rock at these levels, creating a “water curtain cave” effect. You can sit in a pool while hot water pours over you from above, like standing behind a waterfall. The most photographed spot is a pool directly under a cascading stream that drops about 20 meters.

Rainbow Waterfall

When sunlight hits the mist from the main fall, rainbows form almost daily. The site reports over 200 rainbow sightings each year, particularly in the morning and late afternoon. The combination of warm water, cool air, and mist ensures a high probability of seeing one during your visit.

Who Should Go (and Who Should Skip)

Ideal Visitors

• Photographers – The combination of turquoise water, steam, rainbows, and cliffs offers strong composition opportunities.
• Nature lovers – The setting is genuinely wild, with forested hills and rock formations.
• Hot spring enthusiasts – If you’ve tried every type of bath in Japan and Iceland, this provides a completely different experience.
• Travelers to Xichang – It’s the most distinctive day trip from Xichang (about 1–1.5 hours drive).
• Families with older children – Pools are not dangerously hot, and the space allows exploration.

Who Might Be Disappointed

• Those seeking luxury – Facilities are basic. Changing rooms are simple, and there are no spa services.
• People with mobility issues – The terrain is uneven, slippery, and involves steps. No wheelchair access is confirmed.
• Swimmers wanting a lap pool – You can swim in some basins, but they are irregularly shaped and not for serious swimming.
• Those avoiding crowds – Weekends and Chinese holidays are packed. Visit on a weekday.

When to Visit

Best Seasons: Spring and Autumn

March–May and September–November offer comfortable air temperatures (15–25°C) and lower humidity. The water feels warm but not overwhelming, and rain is less frequent.

Winter Visits (December–February)

Winter is actually promoted as a prime season because the cold air makes the steam rise dramatically. Daytime temperatures in the valley range from 5–15°C. The water stays at 39–40°C, so the contrast is extreme. Just be prepared for cold winds when out of the water.

Summer (June–August)

Summer brings higher rainfall and more mosquitoes. The water can feel less refreshing because the air is already warm. However, the forest is lush, and waterfalls are full. Avoid midday heat (30°C+).

Practical Travel Information

Location and Access

Qiaowo Town, Puge County, Liangshan Yi Autonomous Prefecture, Sichuan Province. Coordinates: 27.465064, 102.403173.

From Xichang: drive 45–50 km south on the G5 highway toward Puge. The exit is marked for Luoji Mountain. No direct bus was confirmed in the source data; most visitors hire a private driver or join a group tour. Taxis from Xichang charge around 150–200 RMB each way (negotiable).

Altitude and Safety

Altitude is approximately 500 meters above sea level. This is not a high-altitude site. No altitude sickness risk. However, the ground near waterfalls is wet and slippery. Water shoes with grip are essential. The water temperature is safe for most adults, but avoid staying in the hottest streams too long. The water is drinkable in theory, but don’t swallow it if you’re sensitive to minerals.

What to Bring

• Swimsuit (or go nude in the designated area if you want the authentic Yi experience)
• Water shoes with rubber soles
• Towel (provided by some local vendors, but bring your own for certainty)
• Dry bag for phone/camera
• Sunscreen and hat (the valley is open and sunny)
• Snacks and water (limited food vendors on site)

Duration

Most visitors spend 3–5 hours at the falls, including changing and walking between pools. A full day trip from Xichang takes 6–8 hours, including drive time.

Yi Culture and Naked Bathing Tradition

The Liangshan Yi people have used these hot springs for centuries. The source data mentions a custom of naked bathing with leaves for modesty—a practice that symbolizes returning to nature. Today, the scenic area reserves a specific zone for those who wish to bathe without swimsuits. Signs indicate the area.

Most tourists stay in the main swimming areas. Respect local customs: if you enter the reserved zone, follow the rules. Photography is prohibited in those sections.

The Yi also consider the springs sacred, believing they emerged from the underground “Fire God” battling the “Water God” of the snow mountains. This duality is honored in the naming and design of the pools.

Photography Notes

• Best light: Morning (8:00–10:00) and late afternoon (16:00–18:00) when the sun angle produces rainbows.
• Best spots: The main waterfall curtain, the water curtain cave, and any island pool with steam.
• Gear: Use a waterproof camera or a phone in a dry bag. A polarizing filter cuts glare and makes the water appear clearer.
• Aperture: To capture rainbows, use a small aperture (f/11 or f/16) and a shutter speed around 1/160–1/250 sec.
• People: Most pools are crowded; try shooting from a higher rock to avoid including too many figures.

Frequently Asked Questions

Is the water safe to swim in?

Yes, the water is constantly flowing and treated naturally. The temperature is comfortable for swimming (around 40°C). Be cautious of slippery rocks and submerged currents near the main falls.

Do I need to book tickets in advance?

The source data did not specify advance booking. On weekends and holidays, it is advisable to book through online platforms (like Ctrip or Trip.com) to avoid long queues. No official website was provided.

Can I visit with children?

Yes, but supervise them closely. Some pools are deeper and the currents can be stronger near the falls. Keep young children away from the direct waterfall impact zone.

Is there an entrance fee?

The source data did not provide exact ticket prices. Expect a fee in the range of 100–200 RMB per person (common for similar attractions). Check recent reviews on travel apps before going.

Are there changing rooms and lockers?

Basic changing facilities exist. Lockers may be available for a small fee. Bring valuables in a waterproof bag.

Can I drive myself?

Yes, the roads from Xichang to Puge are in good condition. A private car is recommended. Parking is available near the entrance (fee around 10–20 RMB).

What about health benefits?

The water is a radon hot spring, which is often marketed for skin health and stress relief. No medical claims can be verified from the source data. Soaking in warm mineral water is generally relaxing.

How to Plan Your Trip

1. Start from Xichang – Most travelers stay in Xichang (the capital of Liangshan). It has an airport and train station.
2. Book a driver – Arrange a round-trip car through your hotel or a local travel agency. Negotiate a price including waiting time.
3. Depart early – Leave Xichang by 8:00 AM to reach before the crowds peak.
4. Spend the morning in the main pools – The light for rainbows is best before 10 AM.
5. Have lunch at the site – Limited food options exist; a packed lunch is safer.
6. Explore the Hanging Hot Springs in the afternoon – The sun illuminates the water curtain cave.
7. Return to Xichang by late afternoon – Avoid driving after dark on unfamiliar mountain roads.

Summary

Luoji Mountain 99 Li Hot Spring Waterfall offers a natural thermal experience that is rare even in a province famous for hot springs. The certification as the world’s largest hot spring waterfall, the “Ice and Fire” contrast, and the integration of Yi culture make it a memorable day trip from Xichang.

While the facilities are not luxurious, the raw beauty of the setting compensates fully. Come prepared for wet, slippery conditions and limited amenities, but leave knowing you bathed in a true geological wonder.