Maple Leaf Tour in October, from Hokkaido to Hell Valley, you can drive a circle to the soup marsh at the source of Hell Valley hot springs. If you walk there for about 30 minutes, there are no tickets here. Datangmarsh is the remnants of the eruption crater formed by the eruption of Rihe Mountain. The Sulphur Springs at the bottom of the pond are about 130 degrees. Because the temperature is too high, the lakeside cloudy scenery is formed. Owing to the strong sulfur taste, the odor of rotten eggs was so strong that it could not breathe. In front of the viewing platform of Datang Marsh, I watched the sulfur vapor wave after wave, surrounded by the red leaf mountain scenery nearby. The water in the lake was boiling constantly because of the high temperature. The whole scenery did not look like hell at all, but like the Yao Pool of the Queen Mother.