In the early morning, fantastic colors are created by sunlight cast over the Longtan Grand Canyon in Jianchang County, Huludao City, Liaoning. The wildflowers in the valley blossom successively while the morning mists are drifting over the canyon, and at the bottom of the valley is lucid and verdurous waters surrounded by sheer cliffs and steep mountains, looking beautiful and scenic.  

The Longtan Grand Canyon National Geopark in Jianchang is characterized as a unique Karst landform in northern China, with a rare underground valley of 54.5 kilometers in length and 648 meters in depth. The canyon covers an area of 14.22 square kilometers, of which the water area is 0.054 square kilometers. It is called “Little Plateau in the Northeast” and “Little Tibet in the Northern China” for its scenery of mountains, waters, caves, rocks, waterfalls and the valley. There are dolomitic limestone, Yanshanian granitoids, Mesozoic volcanic rocks and other geological landscapes in the canyon, with a forest coverage rate of more than 90%. With 20,000 negative oxygen ions per cubic meter of air, the canyon can be said to be a “natural oxygen bar”.