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Sanmenhai Area
No. 1 of Best Things to Do in Hechi

Sanmenhai Area

7.7
4.5/5
915 reviews
Nestled among the karst peaks of Fengshan County, Hechi, Guangxi, the Sanmenhai Area is a cluster of collapsed skylights connected by an underground river. The cave ceilings collapsed and linked with the surface, leaving seven skylights arranged like a string of beads resembling the Big Dipper, with three currently accessible by boat. The journey begins on a bright lake before entering a dark cave, then emerging back into the light, with the scenery of mountains, water, caves, and sky alternating before your eyes—creating the illusion of "seas within mountains and gates above seas," which inspired the name Sanmenhai. Geologists and cave researchers call this skylight cluster the "Window of the World" and the "Karst Geology Museum," as it remains largely untouched by human development. During the boat tour, the first stretch of water forms a lake encircled by cliffs, its surface a deep blue. The second skylight, known as the "Half-moon Skylight," reveals a rock opening resembling a crescent moon hanging above. The innermost skylight passage is deep and maintains a constant temperature—warm in winter and cool in summer. When sunlight slants through the opening onto the water, the turquoise lake and submerged rock walls reflect like a piece of jade immersed in water. The tour is primarily by boat, alternating between bright lakes and dark caves. Each passage through shadowy waterways is met with light from the skylights, offering perfect photo opportunities on sunny days when the water displays distinct layers of color. Due to its remote location, a round-trip to Fengshan town requires planning for travel time. The experience is boat-centric and pairs well with other karst views in the county on the same day.Fengshan · 15.5 km from downtown

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What travelers say about Fengshan

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淡淡烟草味October 29, 2026
4.0
The core attraction of Sanmenhai Scenic Area, though not large, is the Tiffany Blue Lake. For those who see it every day, the 98 yuan boat ticket is worthwhile. However, if you've been to Pingshan Grand Canyon, you might not find it as amazing.

Sanmenhai Area

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Invisible WindJune 8, 2025
5.0
江洲地下长廊是世界上发育于二迭系可溶岩地层中的第一长洞。江州地下长廊拥有高达数百的支洞岔道,大厅,竖井、裂隙、暗河等,整个系统错综复杂,就像一座地下迷宫,简直就是洞穴探险者的胜地。踏入江洲地下长廊,首先映入眼帘的是那高耸的岩壁。岩壁上错综复杂的纹理,像是大自然的笔触,一笔一画勾勒出这片神秘的天地。再继续深入洞穴,仿佛进入到一个遗世独立的地下世界。洞口宽广如天幕,阳光透过茂密的植被洒入洞内,光影交错。在洞穴深处,一条清澈的暗河静静地流淌,水面反射着微弱的光线,波光粼粼。穿上救生衣,坐上划艇,轻轻滑入这片碧绿的水域。每一次桨叶划过水面,都带起一圈涟漪,耳边只剩下水滴落在船舷的声音,水流轻轻推着你前行,江洲地下长廊内的景象逐渐展开。

Jiangzhou Underground Corridor

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淡漠的河石October 29, 2026
4.0
This is a free attraction along the way to Sanmenhai. Driving into the cave is quite impressive and it's suitable for travelers with cars. We recommend driving there.

Shegeng Cave

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江湖一秀才November 28, 2019
5.0
I came to Hechi for two days and visited three scenic spots, Wanshou Valley, Sanmenhai for one day, and Qibailong for one day. After checking online, it was confirmed that the above attractions are cave drilling, boating, and mountain walking. Wanshou Valley is two caves with a skylight in the middle, and the whole journey is about 1,500 meters. The skylight and the valley bottom are a bit monotonous, and the stalactites in the cave are so many and beautiful! Let you see enough at one time. Personally, I feel that after seeing Wanshou Valley in Hechi, there is basically no need to see other caves again, and the cost performance is super high. The online Qunar e-ticket is cheaper than the on-site ticket. Sanmenhai is about one kilometer away from Wanshou Valley. The ticket was also booked on Qunar, which is also cheaper than the on-site ticket. I got on a small wooden boat with 8 people, and the boatman who rowed the boat was a local villager. The water is very green and slow, and the wind blowing from the water is very cool. It is said that the negative ions are very high. The scenery is still good. I went through three gates, so-called three days and three nights. The whole journey took about half an hour to go in and out. I personally feel that I am still not satisfied, and the cost performance is not high. The day we came was the last day of the March 3rd folk song festival, so it was worthwhile to experience the customs of ethnic minorities. The next day we visited the Qibainong Scenic Area. We booked tickets online, and when we arrived at the gate of the scenic area, we found that the on-site tickets were cheaper, so we refunded the electronic tickets. The reason for the cheap on-site tickets was said to be the March 3rd discount event. After entering the scenic area, there was a zigzag mountain road that went up and down, left and right. There are four classic attractions: Bali Jiuwan, Qianshan Wanlong Scenic Spot, Tianxia Diyi Nong, and Tornado. There are still 9 kilometers from Tianxia Diyi Nong to Tornado, so we gave up and didn't go. There are three intersections to enter the scenic area, namely Dahua, Donglan, and Du'an. I personally think it is best to drive a car to visit, and basically all cars that are not too old can climb up. We took the route from Dahua to Du'an. The downhill road to Du'an is very long! My ears were blocked by the air pressure. Some people posted tips on evading tickets online, and I don't approve of this practice, after all, they have built the road so well (although not all of them). Almost all the mountain people in the scenic area are poor households. A little bit of ticket money can improve their travel conditions, which can be considered a good deed.

Wanshou Valley

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Anonymous userOctober 23, 2026
5.0
The Baimo Cave isn't as exaggerated as the media portrays it. There are indeed quite a few elderly people inside undergoing so-called magnetic therapy. Personally, I think it's damp inside and could easily lead to rheumatoid arthritis.

Baimo Cave

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帝国统帅66February 25, 2025
4.0
The Yuanyang Cave Scenic Area is located 3 kilometers east of Fengshan County, Hechi City, Guangxi Zhuang Autonomous Region, with an altitude of more than 700 meters. The stone pillars, stalagmites and stone curtains in the cave are dazzling, with moving shapes and lifelike, including flying dragons, coiling dragons, rushing waterfalls, mandarin ducks playing in the water, silver butterflies flying, and beautiful scenery. There are countless stalagmites in the cave, which gather in many places to form a peculiar cave stone forest landscape. The stalactites in the cave are like floating mountains and leaping waves, continuous and spectacular. According to measurements, the content of negative oxygen ions in the air in the cave is as high as 70,000 per cubic centimeter, which is a natural oxygen bar.

Yuanyang Cave

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135***63October 22, 2026
5.0
The location is remote; you have to cross several mountains to reach the Crystal Palace. Parking lot number 4 is closest to the entrance. The Crystal Palace is entirely white and very beautiful. It's about a 1.5-kilometer walk and well worth a visit.

The Crystalpalace Bama

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曾經滄海🐇October 25, 2026
4.0
The scenic area is easily accessible, with free parking at the entrance – thumbs up! 👍🏻👍🏻👍🏻 The entire scenic area is toured by boat 🚢, making it suitable for the elderly and children. Please note that there is a significant temperature difference between inside and outside the cave, so bring an extra jacket.

Bama Birds Rock

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Lucy帆辰May 12, 2024
5.0
Chuanlongyan Cave is located in Fengshan County, Guangxi. It covers an area of ​​4,200 square meters and is 100 meters high. It can accommodate 20,000 people for activities. The Fengshan World Geopark Museum is built in the cave (currently not open to the public and is under reconstruction). There are roads and rivers passing through it, and there are bridges. Going in, there is the "Chuanlongyan Ancient Carved Stone Road". The stone road winds up along the river bank, and the green mountains are reflected in the water, just like a "paradise". The stone carving corridor on the wall of Chuanlongyan is about 100 meters long and more than 10 meters high. Many ancient and modern literati and poets have left many manuscripts here. The mountains behind are majestic and overlapping, the distant mountains are towering, and the mountains are stacked up.

Chuanlong Cave

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What are the recommended tours and excursions in Fengshan?

When choosing a tour, start with how much time you have and the kind of experience you're looking for. Trending options right now include Baimo cave + Bainiao cave private charter 1-day tour | Private customize | Private charter for a worry-free journey, Nanning, Guangxi: Bama Longevity Village + Baimo Cave + Bainiao Rock | Customizable Itinerary | Private Charter | One Booking Per Group, and 1-day Tour to Luomei Lotus Cave + Dashiwei Karst Doline + Haokun Lake Scenic Area in Baise, Guangxi (Chinese and English Services Available). Check the real-time availability and itinerary before you book.

As of October 31, 2026, the reference price for day tours and activities in Fengshan is around USD 180.37 – USD 245.96. Rates vary by duration, group size, transportation, tickets, meals, and any special admission requirements. Before you book, please confirm the billing currency and whether the price is quoted per person or per group.

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