Kumoba Pond, located in Karuizawa, Nagano Prefecture, is a small man-made reservoir created in the Meiji era for irrigation purposes. The pond spans approximately 0.042 square kilometers and sits at an elevation of roughly 950 meters above sea level. Its official name is Kumobaike, though it is commonly referred to as Swan Lake due to its serene appearance and the occasional presence of waterfowl.
The pond has become one of Karuizawa's most photographed natural attractions, particularly valued for its mirror-like reflections of the surrounding mountains and forests. The area gained popularity during the late 19th and early 20th centuries when Karuizawa developed as a summer retreat for foreign missionaries and Japanese elites seeking respite from Tokyo's heat. The tranquil setting and relatively cool temperatures made it an ideal location for leisurely walks and contemplation.
Visitors can walk around the pond via a flat, well-maintained path that takes approximately 15 to 20 minutes to complete. The circuit offers multiple vantage points for photography, with the western shore providing the most iconic views of Mount Asama and the forested slopes reflected in the water. The peak season for autumn foliage typically occurs from mid to late October, when the maple, larch, and birch trees display vibrant red, orange, and yellow hues. Spring and summer also attract visitors, though the autumn period remains the most popular.
Kumoba Pond is located about 1.5 kilometers northwest of Karuizawa Station. Visitors can reach the pond by rental bicycle, available near the station, which takes approximately 10 minutes. Alternatively, a leisurely walk from the station takes around 20 to 25 minutes. Taxis are also available and take roughly 5 minutes. There is no admission fee to access the pond or the walking path surrounding it.
