Harter Fell turns its smoother back to Kentmere, saving its more impressive side for the head of Mardale, the valley holding Haweswater. Before the lake was raised by a dam in the 1930s the small village of Mardale Green stood at the head of the valley, now only revealed in time of drought. Feeding the lake from either side of Mardale Ill Bell are the corrie tarns of Small Water and Blea Water, the latter being the deepest tarn in Lakeland.