Great Carrs, in common with many fells, has easy slopes to the west and crags to the east. These crags- falling directly from the summit- form the head of Greenburn. A steep sided, rather marshy valley, Greenburn is a part of the Little Langdale system, its waters joining the River Brathay at Little Langdale Tarn. Greenburn itself bears a tarn, or more correctly the remains of a reservoir. A natural waterbody was dammed in the early 18th century to provide water for the Greenburn Mine. The 250 yard long barrage has now been breached to leave a collection of pools and bogs. The mines in question, also known as New Coniston Mine, were worked for copper from 1845 until substantially abandoned in 1865, the shafts reaching a depth of 700 ft below ground. Greenburn is bounded to the north by the curve of Wet Side Edge and to the south by Wetherlam.