The undulating summit plateau of Sheffield Pike has marshy ground and small tarns in places between rocky outcrops, with rough grass and heather. A broad cairn on top of an outcrop of rock marks the summit. Two iron posts, one on Heron Pike and the other above Nick Head, are inscribed H 1912 on one side and M 1912 on the other. These mark the boundary between the Howard estate of Greystoke and the Marshall estate of Patterdale. The summit cairn also carries an old stone boundary marker with the H and M initials as well as a cryptic E.R. and the date 1830.