Pike o' Blisco stands on the complex ridge of high ground descending south-eastward from the
Scafell massif. The ridge incorporates
Esk Pike,
Bow Fell,
Crinkle Crags and
Cold Pike before turning sharply north-eastward to Pike o' Blisco; it then makes a further abrupt northerly diversion around
Blea Tarn to connect to
Lingmoor Fell. To the north of Pike o' Blisco is the Oxendale branch of
Great Langdale, while
Little Langdale stands to the south east. The two valleys drain eastward, joining beyond Lingmoor Fell. To the south of Pike o' Blisco is the summit of
Wrynose Pass, which links Little Langdale with the
Duddon Valley, and beyond the pass lies
Swirl How and the
Coniston Fells. Between Cold Pike and Pike o' Blisco is a wide grassy depression at . On the southern side is the source of the
River Duddon, while to the north is Red Tarn, a feeder of Great Langdale Beck. Red Tarn is an elongated pool whose stony bed can be seen through clear shallow waters, reputed to hold trout. Its name comes from the colour of the surrounding soil rather than the water itself. The
tarn forms a focal point for walkers, as the wide path from the summit of Wrynose Pass to Great Langdale runs beside it, with a further path branching off across its outflow towards Crinkle Crags. The main path was originally made to serve Red Crag
Mine, which now consists of a series of pits and trial borings for
iron ore, concentrated about north of the tarn. The mine was worked from 1860 to 1875 but never achieved commercial success. Pike o' Blisco itself consists of the steep, conical summit area above Red Tarn along with a swathe of hilly country spreading out to the south and east. The summit is defended by Kettle Crag to the north and Black Wars to the west, with Black Crag abreast the ridge descending southward to Wrynose Pass. The eastern part of the fell is centred upon the subsidiary top of Blake Rigg at around in an area of rocky outcrops and small tarns. From Blake Rigg a ridge runs north east to cross the summit of the
Blea Tarn road at . This pass, narrow and steep even by Lake District standards, links the two Langdales and is named after the large tarn which sits beneath the eastern crags of Blake Rigg. Its waters hold trout, perch and pike, and the easily accessible shoreline features in many a photograph of the
Langdale Pikes. ==Geology==