Scafells, also known as the Scafell Massif, range of fells in the western English Lake District, made up of the remains of a caldera volcano. Fells in the range include Scafell, England's tallest mountain Scafell Pike, Broad Crag and Ill Crag. Great End, Lingmell and Slight Side are also usually included within the definition. These hills form part of the Southern Fells.