Ullswater is the second largest lake in the English Lake District, being approximately nine miles long and 0.75 miles wide with a maximum depth of slightly more than. Many regard Ullswater as the most beautiful of the English lakes www.ullswater.visitor-centre.co.uk. Calls Ullswater "England's most beautiful lake and so much more". : it has been compared to Lake Lucerne in Switzerland. It is a typical Lake District narrow "ribbon lake" formed after the last ice age when a glacier scooped out the valley floor and when the glacier retreated, the deepened section filled with meltwater which became a lake. The surrounding mountains give Ullswater the shape of...more »