Lowther Hills
The Lowther Hills, also sometimes known as the Lowthers, are an extensive area of hill country in the Southern Uplands of Scotland, though some sub-ranges of hills in this area also go under their own local names – see "Hillwalking" below. They form a roughly rhomboidal or lozenge shape on the map with the acute angles being to north and south. It has river valleys along its boundaries to north east and south west which carry the two largest arterial routes northwards into the west side of the Central Belt of Scotland. A string of small towns have long since developed along these routes. Most of the Lowther Hills lie in the Administrative County of Dumfries and Galloway, though part in the administrative county of South Lanarkshire moves into them around the village of Leadhills and the Daer Reservoir.
Etymology
There is some obscurity surrounding the name Lowther. Derivation from the early Irish lothur meaning "a canal, a trench", in this sense "a pass between hills", has been suggested.North-east and south-west boundaries
It is some 30 kilometres across the rhomboid as the crow flies from the town of Sanquhar just to the west of the Lowthers to the towns of Beattock and Moffat, [Dumfries and Galloway|Moffat] on the east and some 28 kilometres from the town of Thornhill near the southern apex to Abington near the northern one. Sanquhar and Thornhill lie on the River Nith, Moffat on the River Annan and Abington on the River Clyde. Annandale and Clydesdale taken together, form a corridor between the Lowther Hills and the Moffat Hills. This corridor between the hills carries the main route running northwards into Scotland on its west side. It carries both the west coast railway line and the M74 motorway and has been the main route north over centuries. Nithsdale to the west of the Lowthers carries both the A76 road and the rail line from Dumfries to Kilmarnock. The next range of hills to the west beyond the River Nith is the Carsphairn and Scaur Hills.North-west and south-east boundaries
The north west boundary of the hills runs up the Crawick Water in a north easterly direction from where the Crawick Water runs into the River Nith. This boundary follows the B740 road through Crawfordjohn and connects to the old trunk road north which was used before the M74 was built on its present route. North of the B740 the hills gradually drop out into the Central Lowlands of Scotland though Tinto is an outlier 11 kilometres north of Abington. The south east boundary of the hills is formed by the Forest of Ae which is one of the largest forests in Britain at 10,000 hectares. A continuous band of trees runs, again in a north easterly direction, from Auldgirth on the River Nith, for some 26 kilometres till it meets the M74 motorway 10 kilometres north of Beattock. Continuing south of Ae leads into the plain that surrounds the town of Dumfries.Hill Passes
There are three road passes running in a north easterly direction diagonally through the Lowthers linking the A76 trunk road to the M74 motorway, and several 'ancient passes' now followed by paths or tracks.Dalveen Pass
Dalveen Pass is the most southerly and the longest pass within the Lowther Hills. It runs from Carronbridge on the A76 just north of Thornhill to Elvanfoot near the M74 and carries the A702 trunk road. The road passes near the village of Durisdeer en route and reaches a height of 350 metres at the top of the pass. It is the only pass enlarged by ice into a U-shaped glacial trough, hence the road has to climb up the steep side to gain the head.Mennock Pass
The Mennock Pass carries the B797 which runs from the small village of Mennock on the A76 to Abington near the M74, passing through the villages of Wanlockhead and Leadhills. The B797 reaches to a height of 467 metres as it leaves Wanlockhead – which is the highest village in Scotland.Crawick Pass
Crawick Pass is the most northerly of the three passes and carries the B740 from Crawick to Crawfordjohn and on to the M74. The Crawick is the shortest of the three passes without the steep ascents and overarching hills that characterise the other two. It is also the lowest of the three reaching a maximum height of 288 metres.Ancient Passes
There was another pass from Durisdeer through to Wanlockhead called the Enterkin Pass which was an old pack horse route through the hills from Dumfries to Glasgow. It has been argued by H.R.G. Inglis that this route was used mainly for extracting lead to the Solway coast and was never viable as a main route north because of its height. There is no road through there now though there is a track for walkers into the centre of the hills. The Enterkin Pass was the location of a 1684 Covenanter ambush of a party of Dragoons during the Killing TimeThe Romans built a road through from their fortlet near Durisdeer on a route which takes a more direct route to the head of the pass than is offered by the Dalveen Pass. Inglis calls this route Well Path and he considers this to have been on the main pilgrimage route from Edinburgh to Whithorn and one of the main ancient routes northwards through the Southern Uplands.