"In the winter when the snow is there it's a different world, escaping into the silence. It has a hint of the forbidding too because you feel you're going on true adventures." Andrew Cotter.

It's almost two years now since Iain Cameron and Andrew Cotter took producer Miles Warde on a lengthy summer mountain hike. They all agreed they'd love to come back in the winter, in the snow, kitted out and accompanied by at least one of Andrew's famous dogs. Olive stayed at home for this one; but buoyed up by endless biscuits and chicken bits, Mabel made it over four Munros in the ice and snow near Glenshee. It was a grand day out.

Andrew Cotter is a sports broadcaster and author of Olive, Mabel and Me. His friend Iain Cameron is a snow patch researcher and author of The Vanishing Ice.

The producer in Bristol is Miles Warde.