The latest detection length data shows that the length of Shuanghe River is 257.4 kilometers, which is not only the first in China, the first in Asia and the fifth in the world. In order to protect Shuanghedong, a great natural heritage, China established Shuanghedong National Geopark around it.
There are dolomite and celestite in the rock structure of Shuanghe Cave, which makes it the longest dolomite cave and the largest celestite cave in the world. There are countless caves near Shuanghe Cave, which is closely related to the climate and rock landform in this area. Hot Springs is also the largest cave group in China.
Shuanghe Cave is a karst cave structure. The structure in the cave is very complicated. Water flows through some areas of the cave, which also makes it coexist with water holes and dry holes. Its depth has reached 550 meters. There are eight main caves and hundreds of branch caves extending outward. The relationship between caves is different, including caves in caves, caves outside caves and underwater caves. It is also called "Natural Cave Museum" and "Gate of the Center of the Earth".
Shuanghe Cave is named after "Shuanghe source", and water flows through it. The formation of the present scale of Shuanghe Cave is closely related to the internal force and water flow of the earth, because the internal force makes the original solid geology loose, giving the running water an opportunity, and with the long time of dissolution, one tunnel after another is formed.
Shuanghedong tourist attractions:
1, Sunjiao Scenic Area, the only large underground crack in China.
This cave is named after the only underground fissure found in China so far. The crack gradually widens from top to bottom, and only one person can pass sideways at the narrowest part, with a total length of1000 m. The caves are divided into upper, middle and lower floors, which are connected with other caves by underground rivers.
The constant temperature in the cave is 15 degrees Celsius all the year round. Warm in winter and cool in summer, the air is fresh. It's natural oxygen, with high content of negative oxygen ions. Including 120 scenic spots, rare karst landscapes such as rock rolling, stone flowers, underground rivers, caves and waterfalls, and nine bends and eighteen bends are rich, which are both ornamental and interesting.
2. Shuanggu Scenic Area-the only underground canyon in China.
The Double Valley consists of underground valley, tiankeng and gypsum cave, and the underground karst landform is rich. The only underground river valley in China, the first waterfall tiankeng in China, the wonders of underground terraces and high-end holiday hotels are also called "Four Wonders of Double River Valley".
3. The world's number one Shuanghe Crystal Flower Cave
The gypsum crystal flower cave is 13km long, which is "the largest celestite cave in the world" and "the only landscape cave in China". The rolling stones in the cave are exquisite, such as Qionglou Yuyu and Xueshu Yinhua, as if they were in a world of ice and snow.
There are also many columnar gypsum crystals polymerized into radial crystal flowers, and fibrous and flocculent gypsum deposited on the cave walls, like white and soft cotton and gypsum crystal flower caves, are praised by experts as world-class wonders and become rolling works of Shuanghe Cave.
Baidu encyclopedia-Shuanghe cave