Hot summers and cold winters are the laws of nature. The phenomenon of flying snow in June is very rare. Today to talk about a magical cave, it is located in Wuxi County, Chongqing City, in the hot June will actually freeze, ice falls, ice curtains, icicles, ice shoots and other variety, it is the summer ice cave.

Xia Bing Cave is located in Wuxi County Hongchiba Scenic Area (National Forest Park), even to the core scenic spot of Hongchi Dam, there is still a distance from Xia Bing Cave, belonging to the inaccessible kind, you need to walk for an hour and a half up the mountain. Because it is too remote, Xia Bing Cave is still undeveloped.
Why does the Summer Ice Cave freeze in the summer? What is the principle behind this magical phenomenon? Some people say that this is an unsolved mystery, but even so, it can be analyzed from some perspectives.
(Narrow opening)
First, the altitude, the Xia Ice Cave is about 2100 meters above sea level, in theory, the altitude rises by 100 meters, the temperature will drop by 0.6 degrees Celsius. Even in the hot summer, the summer ice cave is relatively cool. People in the mountains even have to cover quilts on midsummer nights.
The second is the topography of the Xia Bing Cave. Xia Bing Cave is not a regular cave, but a cave located at the bottom of the sinkhole. The temperature of the Xia Ice Cave is originally low, coupled with the small entrance of the cave and the thickness of the cave, which makes the Direct Conduction of the Xia Ice Cave and the outside world very little, the air circulation is slow, the temperature is relatively stable, and the temperature can be maintained at a low temperature.
In the summer, the air humidity is high, and the humid and hot air flow of the sinkhole enters the summer ice cave and encounters low temperatures, which condenses into water droplets. When the temperature is zero degrees Celsius, the water droplets will become ice, which will show the magical phenomenon of summer ice.
In addition to the above statement, there are other statements. It is said that because the Summer Ice Cave has a cold source, it is the cold source that freezes the water in the cave. It is also said that these ices are left over from winter, and because the temperature in the cave is low and stable, it can be preserved until summer, but the summer ice cave does not freeze in winter, so this statement is incorrect.
Which explanation is reasonable? This may be a matter of opinion. What do you think?