Thirlmere is a reservoir located in the Lake District of Cumbria, England. It was created in the 19th century to supply water to the city of Manchester. The reservoir is surrounded by scenic hills and forests, making it a popular spot for walking and outdoor activities. The area around Thirlmere is rich in natural beauty and wildlife. It is part of the Lake District National Park, which is known for its stunning landscapes and diverse ecosystems. Visitors can enjoy various recreational activities, including hiking, cycling, and birdwatching, while taking in the picturesque views of the lake and surrounding mountains.