Set amidst the broad sweep of The Sperrins, The Murrins had their origins in the late Glacial period, when retreating ice sheet dammed a lake into which rivers brought vast quantities of sediment which were deposited in a series of deltas.
Supports a rich Heath vegetation dominated by Bell Heather which is home to Red Grouse. Its dry ridges extend out like a delta into a sea of blanket bog, itself only some 4,000 years old. Turf cutters have unearthed the remains of a Bronze Age Field Network under the Bog, established at a time when the climate was different and growing qualities of soil quickly became exhaustive . Perched among the glacial moraines are several small kettle holes (lakes) where Mallard, Teal and Peral Grey Lag Goose frequent.