Mark Hamblin / 2020VISION / Mountain bikers on upland path on route to Ben Macdui, Cairngorms National Park, Scotland, UK, August.

Ashley Cooper / Looking towards Cairn Toul across the Lairig Ghru from Ben Macdui on the Cairngorm plateau, Scotland, UK. February 2011

Ashley Cooper / View towards the Angels Peak and Braeriach across the Lairig Ghru from the summit of Ben Macdui, on the Cairngorm mountains, Scotland, UK. In winter conditions, with sastrugi caused by wind drifted sn...

Ashley Cooper / View towards the Angels Peak and Braeriach in snow, from the summit of Ben Macdui, on the Cairngorm mountains, Scotland, England, UK, February 2011

Ashley Cooper / View towards the Angels Peak and Braeriach across the Lairig Ghru from the summit of Ben Macdui, on the Cairngorm mountains, Scotland, UK, February 2011

SCOTLAND: The Big Picture / The beginnings of the River Dee flowing down the Lairig Ghru between Ben Macdui and Cairn Toul, Cairngorms National Park, Scotland, UK, November 2016.

Mark Hamblin / 2020VISION / Mountain biker on upland path on route to Ben Macdui, Cairngorms National Park, Scotland, UK, August.

Mark Hamblin / 2020VISION / Mountain bikers on upland path on route to Ben Macdui, Cairngorms National Park, Scotland, UK, August.

Mark Hamblin / 2020VISION / Walkers on footpath to Ben Macdui, Cairngorms National Park, Scotland, UK, August 2010.

Mark Hamblin / 2020VISION / Walkers on footpath to Ben Macdui, Cairngorms National Park, Scotland, UK, August 2010.

Mark Hamblin / 2020VISION / Stone marker indicating the direction of surrounding mountains from the summit of Ben Macdui, Cairngorms National park, Scotland, UK, August 2010.

Mark Hamblin / 2020VISION / Boy taking picture of girl sitting on trig point on summit of Ben Macdui, Cairngorms National Park, Scotland, UK, August 2010.

Mark Hamblin / 2020VISION / View of Ben Macdui in winter, looking across the Lairig Ghru, Cairngorms NP, Scotland

Mark Hamblin / 2020VISION / View from the summit of Braeriach and temperature inversion with the summits of Sgòr an Lochain Uainewith (far right), Cairn Toul (middle right) and Ben Macdui (left) beyond, Cairngorms NP, Scotland,

Jim Hallett / Looking down on Ben Macdui, from CairnGorm Highland ridge, Scotland, UK

Geoff Simpson / Larig Ghru (valley through the Cairngorms) + Ben MacDui in winter Scotland UK Highlands

SCOTLAND: The Big Picture / Snow covering Lairig ghru pass, with Ben Macdui and Cairn Toul mountains in the foreground, Cairngorms National Park, Scotland, UK. November, 2016.