sentences:  Rosthwaite Fell is craggy and steep on the three sides that descend to valleys and there is no simple and appealing route of ascent.This, combined with the fact that there are many more attractive climbs in the area, makes the fell a quiet and unfrequented place.Because of its unique geology, Rosthwaite Fell was declared a Site of Special Scientific Interest in 1985 over an area of 230 hectares.