神秘瑰丽的地下河

地下河水是沿左右两边的石壁底下各冒出一股泉水汇集成河。来源于卢水，是珠江水系北江的源头之一，同时也是珠江水系和湘江水系的分水点之一。河水是沿着左边的石壁底下向外而流，经过外面的明河汇入连州的母亲河湟川。地下河蜿蜒四座山底部，全程1500米，洞内气温常年保持在18—22度之间，冬暖夏凉，是旅游避暑的胜地。地下河空气清新，水面平静，流速缓慢。水深1-7米，河面宽1.6-10米，可容纳两艘游船同时并进。

The underground river is formed by a spring gushing out from beneath the stone walls on both sides and converging into a river. Originating from the Lu River, it is one of the sources of the Beijiang River in the Pearl River system and also one of the water distribution points of the Pearl River system and the Xiangjiang River system. The river flows outward along the bottom of the stone wall on the left, passing through the Ming River outside and merging into the mother river of Lianzhou, the Huangchuan River. The underground river meanders at the bottom of four mountains, with a total length of 1,500 meters. The temperature inside the cave remains between 18 and 22 degrees Celsius all year round, warm in winter and cool in summer, making it a popular destination for tourism and summer retreat. The underground river has fresh air, a calm water surface and a slow flow rate. The water depth is 1 to 7 meters and the river width is 1.6 to 10 meters, which can accommodate two cruise ships moving forward simultaneously.