It is located close to the southern end of the ridge, with Helvellyn to the north, and High Crag and Dollywaggon Pike to the south.
Like most fells in the Helvellyn range, Nethermost Pike has grassy western slopes and rocky outcrops on the eastern side.
The eastern slopes are protected as part of a Site of Special Scientific Interest because of the Pike's geological and biological features, which include some of England's best arctic-alpine and tall-herb vegetation.
In Wainwright's words: "The grassy western slope trodden by the multitudes is of little interest, but the fell should not be judged accordingly: it is made of sterner stuff.
The long strath of Grisedale runs north-eastward to Ullswater, cutting off a series of hanging valleys which fall from the Helvellyn range.
This is one of the most difficult mountain tarns to locate, and its black algal bed and clear water combine to give the false impression of great depth.
This arête, although not as imposing as Striding Edge across Nethermost Cove, ascends by a series of rocky steps for three quarters of a mile, making straight for the summit.
At the bottom of the ridge is Eagle Crag, standing above Grisedale Beck and forcing walkers to take a detour from the ridgeline.
Southwards the ridge steps down over High Crag, and narrows as it swings east around Ruthwaite Cove to Dollywaggon Pike.
A heavily eroded path runs along the ridge, but actually bypasses the top of Nethermost Pike to the west, as it leads to Helvellyn.
The closest villages to Nethermost Pike are Glenridding and Patterdale, 8 kilometres (5 miles) to the east, close to the shores of Ullswater.
[7] The geology of much of the Lake District is the Borrowdale Volcanic Group, of which Nethermost Pike is part, and is late Ordovician in age.
The vein which was exploited forms a visible gully on Eagle Crag, and was worked both above and below ground over an altitude of 300 metres (980 ft).
North east of the summit is Nethermost Cove which contains some of England's best arctic-alpine and tall-herb vegetation, including one third of the English population of Downy Willow (Salix lapponum).
[12] The lower eastern slopes form Grisedale Common, a large expanse of dwarf shrub heath.
[14] The summit and eastern slopes of Nethermost Pike are part of the Helvellyn and Fairfield Site of Special Scientific Interest (SSSI).
This SSSI covers 2,418.8 hectares (5,977 acres) centred on the Helvellyn range and Fairfield, and was designated in 1975 because of the area's geological and biological features.