Lake Shikotsu is a caldera lake located in Hokkaido, Japan. It is known for its clear blue waters and stunning natural scenery, surrounded by mountains and forests. The lake is part of Shikotsu-Toya National Park and is a popular destination for outdoor activities such as hiking, fishing, and kayaking. The lake has a maximum depth of 363 meters, making it one of the deepest lakes in Japan. It is also famous for its unique geological features, including volcanic activity in the area. Lake Shikotsu is home to various wildlife, including birds and fish, contributing to its rich biodiversity.