Lough Key is a large lake located in County Roscommon, Ireland. It covers an area of approximately 1,200 acres and is known for its scenic beauty, featuring numerous islands and wooded shorelines. The lake is part of the Lough Key Forest Park, which offers various recreational activities such as walking, cycling, and boating. The area around Lough Key has a rich history, with evidence of ancient settlements and the remains of Lough Key Castle nearby. The park is also home to diverse wildlife, making it a popular destination for nature enthusiasts and tourists seeking outdoor adventures.