Silhouette of two pump jacks at sunrise with the sun glowing on the horizon and colourful clouds in the sky; Alberta, Canada

Silhouette of a pump jack at sunrise with orange glow in the sky and clouds; Acme, Alberta, Canada

Dramatic colorful clouds at sunrise with cityscape and tree silhouette; Calgary, Alberta, Canada

Silhouette of a frosted evergreen tree and frosted tree branches with a sun burst and blue sky; Calgary, Alberta, Canada

Silhouette of two pump jacks at sunrise with orange glow in the sky and clouds; Acme, Alberta, Canada

Dramatic colourful cloud formations with orange sun at sunset and silhouette of tall trees; Calgary, Alberta, Canada

Silhouette of a pumpjack backlit by the setting sun on the Alberta Prairies with blue sky and cloud, West of Airdrie; Alberta, Canada

Dramatically glowing Chinook cloud formation at sunrise; Calgary, Alberta, Canada

Silhouette of numerous pumpjacks in a field with a glowing sun at sunset on the Alberta Prairies, West of Airdrie; Alberta, Canada

Two pump jacks at sunrise reflecting the warm morning light in a snow covered field and snow covered foothills and mountains in the background lit by the morning sun; Alberta, Canada

Two pump jacks at sunrise reflecting the warm morning light in a snow covered field and snow covered foothills and mountains in the background lit by the morning sun; Alberta, Canada

Aerial view of pumpjack in a snow-covered field with long shadows, warm light of sunrise, rolling hills, snow-covered mountains and blue sky in the background; Longview, Alberta, Canada

Silhouette of pump jack at sunrise with sun burst and colourful clouds in the sky; Alberta, Canada