Although it is surrounded by higher and better-known fells, Lingmoor Fell is quite separate and distinct with no connecting ridges to other fells, giving it a considerable topographic prominence of 245 metres, making it a Marilyn hill. Lingmoor Fell has a subsidiary top, known as Side Pike, which lies 1.5 kilometres to the north-west. This is a fine rock tower accessible only from the west and south. Walkers wishing to visit Side Pike from Lingmoor Fell are blocked by unassailable crags and must traverse round to easier slopes to the south. The fell's northern and eastern flanks are clothed in deciduous woodland up to the 200-metre contour, and there are also patches of heather and bracken on these lower slopes. Lingmoor Tarn, an attractive mountain lake about 200 metres in length with a couple of small islands, lies 600 metres north of the summit. One kilometre north of the summit of the fell stands another topographic feature; this is the detached rock pinnacle of Oak Howe Needle. The needle is part of Oak Howe Crag, a popular climbing location on the fell, with over ten routes on Rhyolite crags.
Geology
The summit area is formed from a large sill of andesite, overlying the dacitic lapilli-tuff of the Lingmoor Fell Formation.
Quarrying
Lingmoor Fell's north-eastern slopes above the villages of Elterwater and Chapel Stile have long been quarried for its high-quality Westmorland green slate. The Burlington quarry at Elterwater has been worked for over 300 years and is still in production today, turning out over 800 tonnes of slate annually. Many of the quarries have closed over the years and the crags are now used by rock climbers.
Ascents
Lingmoor Fell can be climbed either from Elterwater in Great Langdale or from the Blea Tarncar park in Little Langdale. The latter route makes use of an old quarry track for much of the way. The Elterwater route can be slightly confusing in its early stages as there are a jumble of paths through the lower woodland and quarries, the route becomes clear once the open fell has been reached.
Summit
The summit of the fell is crossed by a high dry stone wall, which in fact traverses the entire spine of the fell, starting at the eastern foot and terminating abruptly at the crags below Side Pike in the west before re-commencing on the plateau. Lingmoor Fell, Langdale Pikes, and all of the high fells around the head of Great Langdale can be viewed from the summit, as can Coniston Fells to the south-west.