Lake Suwa is a large lake located in Nagano Prefecture, Japan. It is known for its beautiful scenery and is surrounded by mountains, making it a popular destination for tourists. The lake covers an area of about 13.3 square kilometers and has a maximum depth of approximately 7.5 meters. The lake is also famous for its hot springs, particularly in the nearby Suwa City. Visitors can enjoy various recreational activities such as boating, fishing, and hiking along the scenic trails. Additionally, Lake Suwa is home to the annual Suwa Lake Fireworks Festival, which attracts many spectators each summer.