Lunedale is a dale, or valley, of the east side of the Pennines

Pennines

The Pennines are a low-rising mountain range, separating the North West of England from Yorkshire and the North East.Often described as the "backbone of England", they form a more-or-less continuous range stretching from the Peak District in Derbyshire, around the northern and eastern edges of...

 in England, east of Middleton-in-Teesdale

Middleton-in-Teesdale

Middleton-in-Teesdale is a small market town in County Durham, in England. It is situated on the north side of Teesdale between Eggleston and Newbiggin, a few miles to the north west of Barnard Castle...

. Its principal villages are Grassholme

Grassholme

Grassholme is a village in County Durham, England.For centuries it lay within the historic county boundaries of the North Riding of Yorkshire, but, along with the rest of the former Startforth Rural District it was transferred to County Durham on 1 April 1974, under the provisions of the Local...

, Thringarth

Thringarth

Thringarth is a hamlet in Lunedale, in the Pennines of England. It is traditionally located in the North Riding of Yorkshire but along with the rest of the former Startforth Rural District it was transferred to County Durham for administrative and ceremonial purposes on 1 April 1974, under the...

 and West Pasture. Lunedale is part of County Durham

County Durham

County Durham is a ceremonial county and unitary district in north east England. The county town is Durham. The largest settlement in the ceremonial county is the town of Darlington...

.

The River Lune flows through Lunedale before reaching Teesdale

Teesdale

Teesdale is a dale, or valley, of the east side of the Pennines in England. Large parts of Teesdale fall within the North Pennines Area of Outstanding Natural Beauty - the second largest AONB in England and Wales. The River Tees rises below Cross Fell, the highest hill in the Pennines, and its...

 where it joins the River Tees

River Tees

The River Tees is in Northern England. It rises on the eastern slope of Cross Fell in the North Pennines, and flows eastwards for 85 miles to reach the North Sea between Hartlepool and Redcar.-Geography:...

. The river flows through two reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

s on the way: Selset Reservoir and Grassholme Reservoir. Running roughly parallel to Lunedale to the south is Baldersdale

Baldersdale

Baldersdale is a dale, or valley, on the east side of the Pennines in England, north of Barnard Castle. Its principal settlements are Hury and Briscoe. Baldersdale lies within the traditional boundaries of the North Riding of Yorkshire...

.

The Pennine Way

Pennine Way

The Pennine Way is a National Trail in England. The trail runs from Edale, in the northern Derbyshire Peak District, north through the Yorkshire Dales and the Northumberland National Park and ends at Kirk Yetholm, just inside the Scottish border. The path runs along the Pennine hills, sometimes...

 passes through Lunedale on its way to Middleton-in-Teesdale

Middleton-in-Teesdale

Middleton-in-Teesdale is a small market town in County Durham, in England. It is situated on the north side of Teesdale between Eggleston and Newbiggin, a few miles to the north west of Barnard Castle...

, and crosses Grassholme Bridge over Grassholme Reservoir.

A former railway viaduct

Viaduct

A viaduct is a bridge composed of several small spans. The term viaduct is derived from the Latin via for road and ducere to lead something. However, the Ancient Romans did not use that term per se; it is a modern derivation from an analogy with aqueduct. Like the Roman aqueducts, many early...

 from the now-closed Barnard Castle

Barnard Castle

Barnard Castle is an historical town in Teesdale, County Durham, England. It is named after the castle around which it grew up. It sits on the north side of the River Tees, opposite Startforth, south southwest of Newcastle upon Tyne, south southwest of Sunderland, west of Middlesbrough and ...

 to Middleton-in-Teesdale line crosses the River Lune just north of Mickleton

Mickleton, County Durham

Mickleton is a village in Teesdale, in the Pennines of England. It was historically located in the North Riding of Yorkshire but along with the rest of the former Startforth Rural District it was transferred to County Durham for administrative and ceremonial purposes on 1 April 1974, under the...

.