Phoenix Shan Sanmen Sea: The World’s Only Recognized Underwater Sky Pit
Phoenix Shan Sanmen Sea Tourist Resort is currently the only underwater sky pit recognized by the World Cave Association as the world's, and it is a tourist resort integrating natural landscapes, longevity culture and revolutionary history relics, with an international level of quality.

Sanmen Sea is a core area of the world's karst landform, due to the development of three sky pits, which can be entered by boat through natural channels, allowing people to experience the feeling of mountains having seas and seas having doors.

Among the three sky pits, the third one is the most magical, where it is warm in winter and cool in summer, with a constant temperature of 22 degrees. The rock at the entrance directly touches the water surface, and in sunlight, it looks like a huge emerald. If you are lucky, you can also see groups of wild monkeys playing here.

Sky pits are a new type of karst tourism resources, with extremely high tourism viewing value. Sanmen Sea Scenic Area has seven sky pits in total, which are arranged in a string-like formation, and are ranked among the most unique sky pits in the world.
Italian famous explorer and researcher Dr. Nocaliolugi said: 'The sky pit group of Sanmen Sea is a miracle, with a string-like collapse, integrating mountains, water, caves and sky pits, which is rare and unique in the world.'

The sky pits are concentrated in the area, with a large scale, high combination degree, and peculiar scenery. All features of karst landforms such as karst springs, large caves, cave groups, sky pits and natural bridges are concentrated in Sanmen Sea Scenic Area, which is a well-deserved karst world geological park.

The sky pits are layered peaks in the area, with a blue-green river and ripples under the foot of the mountains, the water is as blue as a solidified emerald, and when you get closer, you find that the ripples are carrying scattered leaves and red fragments flowing into the distance.

It's interesting to enter a small boat into the dark cave and watch various jagged and uniquely shaped rocks. It's another experience to see the scenery from the bottom of the pit.

Sanmen Sea is 40 kilometers from Baoma County, a world-famous longevity town; it is warm in winter and cool in summer, with a negative oxygen ion content of over 10000, known as a natural oxygen bar.

Sanmen Sea's heart river is the source of the long-lived belt of Baoma Pan Yang River in the world-famous long-lived town, and the residents in the scenic area are less than 4000, but there are four supercentenarians, with a supercentenarian ratio of 1/1000, which is one of the densest places in the world for supercentenarians.

Address: Village 3, Pacexin Village, Paoxin Township, Fengshan County, Hexi City, Guangxi Province

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