CAIRNGORMS, SCOTLAND - JANUARY 27, 2012: Mark Diggins, co-ordinator of the SportScotland Avalanche Information Service (and chief observer for the Northern Cairngorms region) inspects snow crystals whilst working in Coire an t'Sneachda, Cairngorms National Park, East Highlands of Scotland

Back in January, I had the privilege of attending Lukasz Warzecha's Winter Photography Workshop.

In the weeks running up to the workshop, Lukasz announced we'd have the opportunity to photograph Mark Diggins, an internationally-qualified mountain guide.

Mark Diggins is the co-ordinator of the sportscotland Avalanche Information Service (SAIS), a Scottish organisation that provides avalanche information and forecasts for 5 main climbing areas across Scotland. 

Each day through a period in the winter, Scottish avalanche experts go out into the hills to test conditions and publish daily forecasts of the avalanche, snow and mountain conditions.

Mark is chief observer for the Northern Cairngorms region. He agreed to let us accompany him into into Coire an t'Sneachda in the Cairngorms National Park and photograph him as he went through the steps he takes to assess the snow pack and gather the risk information he uses to update the SAIS website.