There is a Longchao Lake in a ravine in Xiushan Tujia and Miao Autonomous County on the border of Hunan Province, and there is no ditch around it to connect with the lake. But the lake rises and falls regularly every morning, noon and night. How can this small lake in Wuling Mountain rise like sea water? Recently, the reporter went to visit this spectacle.

The lake churns regularly every day.

Longchao Lake is located in Longfeng Village, Qingxichang Town, southwest of Xiushan County 15km, and only about 30m away from National Highway 326. Unworthy, it is actually just a pond with a water surface of less than two acres. "Longchao Lake has no external water source, and most of the lake water comes from the bottom of the lake." A novel by a 68-year-old local resident, Longchao Lake used to be called Shaba Longtang. Under normal circumstances, the lake fluctuates regularly at 8: 00 am, at noon 12 and at 4: 00 pm every day. Every time the tide rises, the lake churns for nearly half an hour, and the water level rises by nearly 1 meter. Then the water level continued to drop by about 1 hour before it recovered.

Liu Bin, a staff member of Xiushan County Trade and Tourism Bureau, confirmed that they had been there several times and the water came from three "longan". The reporter saw duckweed growing on the lake, but there were no floating objects in the three "longan" places. At 5 o'clock in the afternoon, it is exactly what the local people call "low tide". The reporter made a mark on the slate by the lake. After half an hour, the water level really dropped by more than ten centimeters.

Ten thousand snakes once gushed out from the bottom of the lake?

The locals say that three longan trees are deep and eight reeds can't reach the bottom. A diver in Chongqing once dived for 30 meters and didn't dare to go down again. On the back side of Longchao Lake, there is an unfathomable sinkhole covered with trees on a slope of more than 20 meters. Locals say it is the "air hole" of Longchao Lake. "We want experts to explain this phenomenon." The local villagers said. Xiao Fuqiang said that the water in Longchao Lake is mainly used by local villagers to irrigate farmland. 1June, 982, there was no rain for nearly two months, crops cracked, and Longchao Lake became water the size of a dustpan.

But on June 23 of that year, there was a sudden muffled sound, and a water column rose in the "longan". Mud water flowed for three days and nights, and tens of thousands of snakes gushed out. Many people came to watch the fun, and thousands of onlookers stood on the slope of the lake. Farmers can dip a dustpan into the mud at will and squeeze out more than 20 snakes, large and small.