Lake Ranau is the second-largest lake in Sumatra, Indonesia, covering an area of approximately 1,200 square kilometers. It is situated at an elevation of about 1,200 meters above sea level and is surrounded by lush hills and mountains, making it a picturesque destination for nature lovers. The lake is known for its clear waters and is home to various fish species, including the endemic Ranau tilapia. Additionally, Lake Ranau is a popular spot for activities such as fishing, boating, and enjoying the scenic views of the surrounding landscape, including the nearby Mount Seminung.