Ounasjärvi Lake is a large freshwater lake located in Finland, specifically in the Lapland region. It covers an area of approximately 30 square kilometers and is known for its clear waters and beautiful natural surroundings. The lake is a popular destination for outdoor activities such as fishing, boating, and hiking. The lake is situated near the town of Rovaniemi, which is famous for its connection to Santa Claus and the Arctic Circle. Ounasjärvi Lake is also part of the Ounasjoki river system, contributing to the area's rich biodiversity and providing habitats for various fish and bird species.