Mountains are often classified according to their heights. At 891 m (2,922 ft) Nethermost Pike is listed as a Nuttall, which requires an elevation of 610 m (2,000 ft). However, with a prominence of it is not counted as a Hewitt or Marilyn which require prominences of and respectively. Nethermost Pike is also counted as a Wainwright because it was given a chapter in Alfred Wainwright's Pictorial Guide to the Lakeland Fells. It is the second-highest of the Eastern Fells, and the ninth highest of all the Wainwrights. South of Nethermost Pike is High Crag , which is separated from Nethermost Pike by a very limited depression. Most guidebooks follow Alfred Wainwright in considering High Crag to be a part of Nethermost Pike. This convention is not universally followed however, with author Bill Birkett preferring to differentiate between the two fells.