Set in the heart of the Lake District National Park, Tarn Hows Wood lies on the eastern flank of Yewdale. The valley is characterized by Yewdale Fell to the west, with Yewdale Beck flowing in headlong rush from its cascades in Tilberthwaite Gill, to its tumbling rapids in the lower reaches of the valley before flowing into Coniston Water. The flat valley bottom is a miniature agricultural patterned landscape consisting of small hedged fields, punctuated by small groups of trees.