The second largest lake in England by surface area is Ullswater, located in the Lake District National Park in Cumbria. While Windermere is the largest, Ullswater covers approximately 8.9 square kilometers (about 3.4 square miles). It is a classic "ribbon lake," formed by glacial activity during the last ice age, and is often cited as the most beautiful of the English lakes due to its dramatic mountain backdrop and "Z" shape. It is approximately 7 miles long and reaches a maximum depth of 63 meters. Ullswater is famous for the "Ullswater Steamers" which have been transporting tourists across its waters since the mid-19th century. It also has a famous literary connection, as the daffodils on its shores inspired William Wordsworth to write his most famous poem, "I Wandered Lonely as a Cloud." Note that some lists may cite Rutland Water as larger, but Rutland is a man-made reservoir; among natural lakes, Ullswater holds the undisputed second spot in England.