Aurora borealis stretches over mountains within Denali National Park on a very cold winter night; Alaska, United States of America PacificStock
Sunrise over the pond and mountains along the Parks Highway in autumn, near Cantwell in interior Alaska; Alaska, United States of America PacificStock
A hiker on a ridge in Denali National Park is dwarfed by Denali at sunrise in winter; Alaska, United States of America PacificStock
Exit Glacier surrounded by autumn coloured foliage, South-central Alaska near Seward; Alaska, United States of America PacificStock
Snow covered evergreen trees on a snow covered hillside with blue sky and sun burst; Calgary, Alberta, Canada PacificStock
Dark storm clouds roll over a golden farm field with hay bales; Ravensworth, North Yorkshire, England PacificStock