The Northern Fells
The Northern Fells form a self-contained unit quite remote from the other ranges. The western boundary is formed by the course of the River Derwent north of Keswick and the southern perimeter by the River Greta one of its principal feeders. The River Caldew bounds the eastern edge of the group flowing away toward Carlisle. At Caldbeck the Calder is joined by the Whelpo Beck which drains many of the northern slopes. Only on the east, between the headwaters of the Greta and Caldew does a bridge of higher ground strike out to connect with the rest of Lakeland a long ridge curving southward to connect with Great Mell Fell in the Eastern Fells. This ridge, whilst significant topographically is in many places unnoticed on the ground. The deep trough of Bassenthwaite wards off the North Western Fells while the Central Fells rise beyond Keswick and the Greta.
The highest point in the Northern Fells is Skiddaw which stands at 931 metres (3,054 feet) and is the fourth highest mountain in England. The summit ridge bears a number of tops which from north to south are known as North Top, High Man (the summit), Middle Top and South Top. All now bear cairns and a number of stone windshelters have been erected. Skiddaw has a trig point at it's summit as well as a topograph (a monument erected in a high place indicating the direction and distance of notable landscape features which can be seen with the naked eye from that point).