Jack Dykinga / Engelmann spruce (Picea engelmannii) growing amongst pinnacles of volcanic tuff, dawn, Wheeler Geological Area Wilderness, Rio Grande National Forest, Colorado, USA

Sumio Harada / Red Squirrel (Tamiasciurus hudsonicus) separating seeds from an Engelmann Spruce (Picea engelmannii) cone to store for winter food, Rocky Mountains, Alberta, Canada

Alan Watson / Engelmann spruce tree (Picea engelmannii), Alpine paintbrush flowers (Castilleja rhexifolia) and other flowers including Beargrass, in alpine meadow along the Rockwall trail, Kootenay National Park, B...

Alan Watson / Engelmann spruce tree (Picea engelmannii), Alpine paintbrush flowers (Castilleja rhexifolia) and other flowers including Beargrass, in alpine meadow along the Rockwall trail, Kootenay National Park, B...

Alan Watson / View to Helmet Falls with forest of Engelmann spruce (Picea engelmannii) and subalpine fir (Abies lasiocarpa), Kootenay National Park, British Columbia, Canada. World Heritage Site Helmet Falls at 1,...

Alan Watson / View to Helmet Falls with forest of Engelmann spruce (Picea engelmannii) and subalpine fir (Abies lasiocarpa), Kootenay National Park, British Columbia, Canada. World Heritage Site Helmet Falls at 1,...

Alan Watson / View to Helmet Falls through forest of Engelmann spruce (Picea engelmannii) and Subalpine fir (Abies lasiocarpa) in early morning light, Kootenay National Park, British Columbia, Canada. World Heritag...

Alan Watson / View to Helmet Falls through forest of Engelmann spruce (Picea engelmannii) and Subalpine fir (Abies lasiocarpa) in early morning light, Kootenay National Park, British Columbia, Canada. World Heritag...

Alan Watson / Forest of Engelmann spruce (Picea engelmannii) and Subalpine fir (Abies lasiocarpa) silhouettes in early morning light against Limestone Peak, Kootenay National Park, British Columbia, Canada. World H...

Alan Watson / Forest of Engelmann spruce (Picea engelmannii) and Subalpine fir (Abies lasiocarpa) along Helmet Creek, Kootenay National Park, British Columbia, Canada. World Heritage Site July 2007

Jack Dykinga / Quaking aspen trees {Populus tremuloides} in autumn colours with Engelmann spruce trees {Picea engelmannii} Dixie National Forest, Utah, USA

Jack Dykinga / Quaking aspen trees {Populus tremuloides} and Engelmann Spruce trees {Picea engelmannii} in autumn colours, Dixie national forest, Utah, USA

Sumio Harada / Engelmann Spruce (Picea engelmannii) forest of snow-covered trees, Banff National Park, British Columbia, Canada

Staffan Widstrand / Dead tree laying on the forest floor in old growth Mountain spruce (Picea engelmannii) and Pine (Pinus sylvestris) forest, Stuorbatjvare Nature Reserve, Norrbotten, Sapmi, Lapland, Sweden. August.

Jeff Foott / Quaking Aspen (Populus tremuloides) and Engelmann Spruce (Picea engelmannii) trees in autumn, Uncompahgre National Forest, Colorado

Jack Dykinga / Engelmann spruce (Picea engelmannii) surrounded by Arctic cotton (Eriophorum callitrix) feathery seed heads, Jasper National Park, Alberta, Canada. September, 2021.

Jack Dykinga / Aspen (Populus tremuloides) and Englemann spruce (Picea engelmannii) forest, Red Mountain in background. Uncompahgre National Forest, Colorado, USA. October 2019.

Jack Dykinga / Aspen (Populus tremuloides) forest with scattered Englemann spruce (Picea engelmannii), Hayden Mountain in background. Uncompahgre National Forest, Colorado, USA. September 2019.

Jack Dykinga / Aspen (Populus tremuloides) forest with scattered Englemann spruce (Picea engelmannii) in autumn, Hayden Mountain in background. Uncompahgre National Forest, Colorado, USA. September 2019.

Jack Dykinga / Aspen (Populus tremuloides) forest. Uncompahgre National Forest, Colorado, USA. September 2019.

Jack Dykinga / Aspen (Populus tremuloides) forest with scattered Englemann spruce (Picea engelmannii) in autumn, Hayden Mountain in background. Uncompahgre National Forest, Colorado, USA. September 2019.