The Eastern Fells occupy the region between the A591 Keswick to Ambleside road and the lake of Ullswater to the west. The Helvellyn range forms the main spine of the group, running on a north south axis and remaining above 2,000 ft throughout its length. To the south of the Helvellyn range, across the depression of Grisedale Hause, is the Fairfield group of fells. There are also a number of subsidiary ridges and outliers, particularly to the east of the main range. The eastern fells constitute the largest, if not necessarily the wildest, area of high ground within the district, its long sweeping ridges the perfect environment for long distance walking.