Visit Heaven Lake on Changbai Mountain in September and October.

Heaven Lake on Changbai Mountain, also known as Baekdu Mountain Heaven Lake, is located in the southeast of Jilin Province, China, and is a border lake between China and North Korea. It is located at the top of the volcanic cone of the main peak of Changbai Mountain and was formed by the accumulation of water in the crater after the volcanic eruption in 1702. It is slightly oval in shape. The water surface of Heaven Lake is 2,189.1 meters above sea level, about 4,400 meters long from north to south, about 3,370 meters wide from east to west, with a water surface area of about 9.82 square kilometers, a total water storage capacity of 2.04 billion cubic meters, an average water depth of 204 meters, and a maximum depth of 373 meters. It has a temperate continental mountain climate, with long and cold winters, short and cool summers, and foggy spring and autumn. Heaven Lake on Changbai Mountain is the deepest lake in China and the source of the Songhua River, Yalu River, and Tumen River. Its lake water is clear and transparent, colorless and tasteless, and has a low temperature. The lake is surrounded by 16 peaks, offering spectacular scenery. Heaven Lake on Changbai Mountain has rich tourism resources, and there are several scenic spots where you can enjoy the beauty of the lake. The North Scenic Area was developed earlier, with complete facilities, and offers a bird's-eye view of the lake. The West Scenic Area is the most spectacular volcanic landform area of Changbai Mountain, offering a panoramic view of the lake. The South Scenic Area is the closest to the lake, with gentle terrain and less wind, and has a natural garden in summer, offering a panoramic view of the lake. In addition, there are many legends and stories about Heaven Lake, such as the legend of the Heaven Lake monster, which attracts many tourists to explore. When visiting Heaven Lake on Changbai Mountain, you need to pay attention to the weather and the opening hours of the scenic area and arrange your itinerary reasonably. At the same time, pay attention to environmental protection and travel in a civilized manner.