Scotland, Edinburgh, Calton Hill. Trees on Calton Hill with Arthur's Seat in the distance.

Scotland, Edinburgh, Calton Hill. The Dugald Stewart Monument on Calton Hill, looking towards the Castle and Old Town of Edinburgh.

England, Cumbria, High Cup Nick. High Cup Gill — also known as High Cup Nick — is a strikingly symmetrical U-shaped valley carved deep into the Pennine escarpment near Appleby-in-Westmorland, Cumbria, within the North Pennines Area of Outstanding Natural Beauty.

England, Cumbria, High Cup Nick. High Cup Gill — also known as High Cup Nick — is a strikingly symmetrical U-shaped valley carved deep into the Pennine escarpment near Appleby-in-Westmorland, Cumbria, within the North Pennines Area of Outstanding Natural Beauty.

England, Cumbria, High Cup Nick. High Cup Gill — also known as High Cup Nick — is a strikingly symmetrical U-shaped valley carved deep into the Pennine escarpment near Appleby-in-Westmorland, Cumbria, within the North Pennines Area of Outstanding Natural Beauty.

England, Cumbria, High Cup Nick. High Cup Gill — also known as High Cup Nick — is a strikingly symmetrical U-shaped valley carved deep into the Pennine escarpment near Appleby-in-Westmorland, Cumbria, within the North Pennines Area of Outstanding Natural Beauty.

England, Cumbria, High Cup Nick. High Cup Gill — also known as High Cup Nick — is a strikingly symmetrical U-shaped valley carved deep into the Pennine escarpment near Appleby-in-Westmorland, Cumbria, within the North Pennines Area of Outstanding Natural Beauty.

England, County Durham, Cow Green Reservoir. Aerial photo of Cow Green Reservoir, built to supply water to the industries of Teesside.

Scotland, Scottish Borders, Kirk Yetholm. View from the Pennine Way near White Law in Northumberland, looking towards Wildgoose Hill, Latchly Hill and the Southern Uplands in the Scottish Borders, on a misty morning at sunrise.

Scotland, Scottish Borders, Kirk Yetholm. View from the Pennine Way near White Law in Northumberland, looking towards Wildgoose Hill, Latchly Hill, the Southern Uplands and the Eildon Hills in the Scottish Borders, on a misty evening at sunset.

Scotland, Scottish Borders, Kirk Yetholm. View from the Pennine Way near White Law in Northumberland, looking towards Wildgoose Hill, Latchly Hill, the Southern Uplands and the Eildon Hills in the Scottish Borders, on a misty evening at sunset.

Scotland, Scottish Borders, Kirk Yetholm. View from the Pennine Way near White Law in Northumberland, looking towards Wildgoose Hill, Latchly Hill, the Southern Uplands and the Eildon Hills in the Scottish Borders, on a misty evening at sunset.

England, Northumberland, Alnmouth. Boats on the tidal Aln Estuary at Alnmouth. The hill in the distance is known as Church Hill.

England, Northumberland, Northumberland National Park. Evening light illuminates the rolling hills of Upper Coquetdale in Northumberland National Park.

England, Northumberland, Northumberland National Park. Evening light illuminates the rolling hills of Upper Coquetdale in Northumberland National Park.

England, Northumberland, Northumberland National Park. Ridlees Cairn located in the Otterburn Ranges towards the western end of Upper Coquetdale.

England, Northumberland, Rothbury. The market town of Rothbury viewed above from the nearby hills of the Rothbury Terraces.

England, Northumberland, Alnmouth. Snow covered sand dunes near the mouth of the Aln Estuary at Alnmouth. The hill in the distance is known as Church Hill.

England, Northumberland, Alnmouth. Snow covered sand dunes near the mouth of the Aln Estuary at Alnmouth. The hill in the distance is known as Church Hill.

England, Northumberland, Alnmouth. Snow covered sand dunes near the mouth of the Aln Estuary at Alnmouth. The hill in the distance is known as Church Hill.

England, Northumberland, Alnmouth. Snow covered sand dunes near the mouth of the Aln Estuary at Alnmouth. The hill in the distance is known as Church Hill.

England, Northumberland National Park, Hadrian's Wall. A small stretch of Hadrian's Wall near Black Carts Turret.

England, Northumberland National Park, Hadrian's Wall. A small stretch of Hadrian's Wall near Black Carts Turret.

England, Northumberland National Park, Hadrian's Wall. A small stretch of Hadrian's Wall near Black Carts Turret.

England, Northumberland National Park, Hadrian's Wall. A small stretch of Hadrian's Wall near Black Carts Turret.

England, Northumberland National Park, Tyne Valley. Panoramic view of a group of trees surrounded by a fresh snowfall, located in the heart of Hardian's Wall Country.

England, Northumberland, Hadrian's Wall. A mid-winters day at Cawfields Quarry along Hadrians Wall, a world heritage site located within the Northumberland National Park.

England, Northumberland, Hadrian's Wall. A mid-winters day at Cawfields Quarry along Hadrians Wall, a world heritage site located within the Northumberland National Park.

England, Northumberland, Northumberland National Park. A well preserved stretch of Hadrian's Wall passing along Caw Gap.

England, Northumberland National Park, Hadrian's Wall. View north of the wall from Caw Gap.

England, Northumberland, Northumberland National Park. A well preserved stretch of Hadrian's Wall passing along Caw Gap.

England, Northumberland National Park, Hadrian's Wall. Hadrian's Wall snaking over the crags of Steel Rigg with Crag Lough in the distance.

England, Northumberland National Park, Tyne Valley. Panoramic view of a group of trees surrounded by a fresh snowfall, located in the heart of Hardian's Wall Country.

England, Cumbria, Lake District National Park. Lakeland hills and a colourful sunset reflected upon the still face of Coniston Water.

England, Northumberland National Park, Harthope Valley. Dawn at Long Crags located above the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Dawn at Long Crags located above the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Sunset at Housey Crags located above the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Sunset at Langlee Crags located above the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Sunset at Langlee Crags located above the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Breaking light above the Cheviot Hills in the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Breaking light at Housey Crags located above the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Breaking light above the Cheviot Hills in the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Breaking light above the Cheviot Hills in the Harthope Valley.

England, Northumberland National Park, Harthope Valley. Breaking light above the Cheviot Hills in the Harthope Valley.

England, West Midlands, Kinver. Trees on the heathland of Kiver Edge – once the location of an Iron Age Hillfort

England, West Midlands, Kinver. Trees on the heathland of Kiver Edge – once the location of an Iron Age Hillfort

England, West Midlands, Kinver. Tree at sunrise on the heathland of Kiver Edge – once the location of an Iron Age Hillfort

England, West Midlands, Kinver. Trees on the heathland of Kiver Edge – once the location of an Iron Age Hillfort

England, West Midlands, Kinver. Trees on the heathland of Kiver Edge – once the location of an Iron Age Hillfort

England, West Midlands, Kinver. Tree at sunrise on the heathland of Kiver Edge – once the location of an Iron Age Hillfort