Layer-cake mountains spotted with snow, aromatic pine forests and swirling clouds invite us into the heart of North America. Greg has been to Yellowstone National Park in winter, availed myself of the Alpine Club of Canada's superlative hut system and been Artist in Residence in Glacier National Park. Work here involves hiking, dealing with rain and wind and finding a comfortable place to sit. Painting in the Northern Rockies isn't easy, but it is always rewarding.