This is an artificial lake that was completed in 1952 (Showa 27) to provide hot water to agricultural land. Supplying agricultural water to approximately 400 hectares of farmland at the western foot of Mt. Yatsugatake. Because it is located in the center of Tateshina Kogen, it is a gateway to tourism and a place of relaxation where many people gather. Circumference approximately 1.2 km. Altitude 1250 meters. The lake is surrounded by larch, birch and maple trees. You can enjoy boating, SUP, canoeing, and fishing on the lake, as well as walking around the lake, jogging, and cycling. Lake Tateshina is, so to speak, a "forest jewel" that connects nature and people.

You can enjoy the magnificent natural scenery of the Northern Alps. It takes about 7 minutes to travel from the foothill station, located at an altitude of approximately 1,800m, to the summit station at approximately 2,400m, using a 100-person capacity ropeway. From the summit, you can enjoy a panoramic view of Japan's beautiful mountains, including the Yatsugatake mountain range and the Southern Alps. Additionally, near the summit station, a natural garden known as "Tsuboniwa" spreads out, and you can view alpine plants while strolling for about 30–40 minutes. Different landscapes can be enjoyed depending on the season, and it is a particularly popular tourist spot during the fresh greenery of spring and the autumn foliage season. In winter, many tourists enjoy winter sports in combination with nearby ski resorts. Tateshina BASE is about a 20-minute drive away.