Pond Shirakoma is Japan's largest natural lake situated at an altitude of over 2,100 meters, making it a significant natural landmark in the Nagano Prefecture. It is particularly renowned for the surrounding Shirakoma Forest, which boasts a remarkable variety of moss species, creating a unique and almost mystical atmosphere. This high-altitude location offers a cool retreat, especially appealing during warmer months.
Visitors consistently praise the pond for its mysterious beauty, fresh air, and peaceful ambiance. Many find the experience of walking around the pond to be easy and enjoyable, even when there are many other people present. The moss forest is often highlighted as a more compelling attraction than the pond itself, with its diverse flora captivating those who explore it. The area is also noted for its camping opportunities, adding to its appeal for nature lovers.
To make the most of your visit, allocate at least a couple of hours to leisurely walk the promenade and explore the moss forest. Reviewers suggest that the best time to visit is during pleasant weather, as the high altitude provides a welcome coolness. It's advisable to bring comfortable walking shoes for the promenade. While the walk is generally easy, the terrain around the moss forest might be uneven. Be prepared for a 50 yen fee to use the public toilets.
Access to Pond Shirakoma is primarily by car. Visitors should be aware that there is a paid parking lot available. As of July 2025, the fee for passenger cars is 600 yen. The pond is located in Yachiho Kogen, Sakuho-machi, Nagano Prefecture. There is no direct public transport mentioned in reviews, so driving is the recommended method of arrival.
While generally positive, some visitors might find the area crowded during peak seasons. To mitigate this, consider visiting early in the morning or later in the afternoon. The parking fee is a minor cost, but it's good to be prepared for it. The toilet fee is also a small but necessary expense to keep in mind.