The Western Forest Office of the Okhotsk Regional Development Bureau (located in Koube) manages this area. This waterfall is located deep in the mountains, about a 40-minute drive from Yubu. The spray of the waterfall hitting from a height of 30 meters is worth seeing. In summer, the place is full of negative ions. Crayfish also live around the waterfall basin.

About 50 meters upstream from the Shinmon-no-taki Falls is another waterfall, the Shoryu-no-taki Falls. To get to this waterfall, you will have to walk through the river, so please bring boots. The water is not deep, but the current can be fast after heavy rainfall. Please be careful.

To get there, take the Otake-Mibuka Route (Highway 49) from Otake, cross the mountain, and after descending, hit the Shimokawa-Yubu Route (Highway 60). Turn left and follow the Shimokawa-Yubu line. On the right side of the Horonaikoshitoge Pass, you will see a sign that reads "Kammon-no-taki Waterfall Entrance. Continue on the forest road, and on the way you will come to a fork for Kammon-no-taki Falls and Piyasiri Marsh, so head in the direction of Kammon-no-taki Falls. The forest road is not well maintained, so please be careful not to scrape the belly of your car if you are driving an ordinary car.

The Western Forestry Office of the Okhotsk General Promotion Bureau (located in Koube) manages the road, and although permission to enter the mountain is not required, there is a post for forest entry notification at the entrance to the Kammon Falls mentioned above, so please fill out and post the necessary information on the form provided there."