The Autumnwatch team explore the winter wildlife of the Cairngorms on Friday 20 November, 2009. http://news.bbc.co.uk/local/highlandsandislands/hi/people_and_places/nature/newsid_8366000/8366826.stm
Tune in to BBC Two at 2030 to find out more as Kate Humble and Chris Packham brave the snowy slopes.
The Cairngorms National Park covers a vast area of Scotland.
The park is made up of 1,400 square miles of land ranging from the fringes of the Angus Glens to Laggan in the west, Ballater in Aberdeenshire and Grantown-on-Spey in the north.
Towns and communities in the park range from the Highland hub of Aviemore to the royal retreat of Crathie.
At the heart of the park is, of course, the wild heart of the Cairngorm mountains.

Ptarmigans are elusive birds
The Cairngorms are an outdoors paradise all year round acting as home to many species of wildlife and plants as well as being the perfect place for outdoor pursuits.
Tourists flock to the area in the summer months for activities such as hill-walking, climbing and kayaking.
Wildlife ha en
In winter the snow lies deep on the mountains offering people the chance to ski and winter-climb.
Away from the slopes with the temperatures often below freezing levels the landscape is a haven for wildlife.
Birds and animals take on their winter coats and plumage with ptarmigans turning white along with mountain hares and stoats.
Watch Autumnwatch from the Cairngorms, on Friday 20 November, 2009 at 8.30pm on BBC Two