This is a well-known observatory located at the end of a 2.3 km one-way walking path from within the Tachikobu Auto Camping Ground. Visitors can take a walk while admiring the spring water, Yachibozu trees, and Mizubasho (Asian skunk-cabbage) in early spring. After climbing up the latter half of the hill to the observatory, you can see the meandering Kushiro River, and depending on the time of day, a train may be running on the Kushiro-Meshi Line. The best time to visit is from May to October, as the area is not cleared of snow and managed during the winter season.