The total area of the Lake District is about 2,292 square kilometres that is around 885 square miles. The Lake District received its name because it contains 16 lakes and more than 50 tarns, which were formed in the result of glaciation. As the ice melted, the glacial cirques became filled with tarns, which are mostly located at the upper regions. One of the feature of the fells is their change with a hight: the high fells are rocky when lower ones can be covered by heather and bracken. Ancient woodlands introduce even greater diversity of landscape in the same time being home for different wild animals such as red squirrel and rare plants. The presence of old coppice woodland, pollards form part of the rich cultural heritage of the Lake District National Park.