Tengchong County, Yunnan Province, known as the natural geological museum, is located at the junction of the Indian plate and the Eurasian plate in the Himalayan geological structure belt of the Alps, attracting worldwide attention. Underground faults are very developed and magmatic activity is very strong. It is one of the most famous volcanic dense areas in China. There are more than forty volcanoes, large and small, high and low, which constitute a huge volcanic landscape. There is a saying among the people that crossing the boundary means ten mountains and nine headless. Nine times out of ten, this headless mountain is a volcano.
According to experts' research, the earliest volcanic group in Tengchong erupted in Laifeng Mountain 900,000 years ago. Tengchong county was built on the rolling lava that erupted and cooled when the fire broke out. The most beautiful volcano is Shunjiang Sister Lake, which is a pair of eyebrows formed by accumulated water in adjacent craters, resembling twin sisters. The circular coastline of the lake is covered with dark volcanic lava and volcanic eruption remains such as volcanic cones, volcanic snakes, volcanic bombs and volcanic pumice. A clear water is sparkling and unfathomable. Clouds and shadows in the sky, green trees and mountains, birds and flowers are reflected in it, which is picturesque and dreamlike. The highest and youngest volcano is Daying Mountain, with an altitude of 2614m, which erupted more than 380 years ago. 1639, the great traveler Xu Xiake visited this mountain, and learned from the local population that 30 years ago, there were towering trees and bamboos on the mountain, and there was no gap between them. Among them, Longtan IV is unfathomable. Footsteps came, and the waves were so rough that people were afraid to approach. Then there were shepherds, who killed 500 or 600 sheep and several shepherds with one thunder. After a few days of night fire, the trees deepened and there was no legacy, and the pool became land. In order to prove the truth, he also made a careful field trip and found that the stones on the top of the mountain were bright red in color, light in texture and looked like honeycombs. Although it is big enough to be folded with two fingers, the quality is still very solid, which is really a dust grab. From this detailed text, it is not difficult to imagine the fierceness of this mountain full of flowers and beautiful leaves.
Before 1990s, people always thought that Tengchong Volcano Group was a Cenozoic extinct volcano group. 1In May, 1993, Xinhua News Agency released an amazing news: China scientists used gas geochemistry to study volcanoes and made important discoveries. The Tengchong Volcano Group in Yunnan, which has been extinguished for more than 380 years, is not an extinct volcano, but an active volcano in a dormant state! Once this brand-new definition is spread, it adds a touch of new majesty and mystery to Tengchong Volcano Group, which makes people who are dignified and mysterious enough feel more awe and excitement when they travel and enjoy the scenery. Therefore, Dakong Mountain, Kongxiaoshan and Heikongshan, which are easy to peek at the original landform of volcanoes, have become the first choice for many tourists.
In Mazhan Township, which is 10 km west of Tengchong County, three empty volcanoes stand tall. From a distance, they look like three inverted bowls. These mountains are about 500-600 meters apart, and they line up from north to south, facing Daying Mountain in the southwest of Xiong Zhi. Black Mountain lives in the north, with a relative height of about 200 meters. The pine forest on the mountain is dense and dark green. There is a black stone belt stretching for miles on both sides of it, which is lava cooled and solidified from the ground. In contrast, the big sky in the middle is a bit desolate. It is slightly lower than the Black Mountain, and there are no tall trees, but the view is very broad. Surrounded by a torrent of lava formed after the eruption of that year, it is empty and desolate, weeds are dying, and some people's thoughts are wandering; Kong Xiaoshan is only 50 meters high, but the crater is surprisingly large, with a diameter of more than 150 meters and a depth of 70 meters. The conical surface is empty, seemingly empty, but full of infinite mysteries of nature.