Jack Dykinga / Steep valleys in the foothills of the Temblor Range, carpeted with Coreopsis (yellow) and Phacelia (purple) with patches of orange California poppy (Eschscholzia californica). Carrizo Plain, Californi...

Jack Dykinga / Steep valleys in the foothills of the Temblor Range, carpeted with Coreopsis (yellow) and Phacelia (purple) with patches of orange California poppy (Eschscholzia californica). Carrizo Plain, Californi...

Floris van Breugel / Ancient Bristlecone pine (Pinus aristata) clings to life, with a grand view of endless sage valleys, White Mountains, California, USA, July

Floris van Breugel / California poppies (Eschscholzia californica) and California goldfields (Lasthenia californica) extend as far as the eye can see, Antelope Valley Poppy Preserve, California, USA

Floris van Breugel / California poppies (Eschscholzia californica) and California goldfields (Lasthenia californica) extend as far as the eye can see, Antelope Valley Poppy Preserve, California, USA

Floris van Breugel / Barrel cacti (Ferocactus pilosus) and Ocotillo overlook Palm oasis at sunrise, Anza-Borrego Desert State Park, California, USA March

Dong Lei / Poppy (Meconopsis punicea) in habitat, Serxu, Shiqu county, Sichuan Province, Qinghai-Tibet Plateau, China. August.

Dong Lei / Poppy (Meconopsis racemosa) flower in habitat. Serxu, Shiqu county, Sichuan Province, Qinghai-Tibet Plateau, China. August.

David Pattyn / Alpine ibex (Capra ibex) adult male in mountain landscape. Alps, Aosta Valley, Gran Paradiso National Park, Italy. September.

Orsolya Haarberg / View over the Lysefjorden from the Preikestolen / Pulpit rock, Forsand, Rogaland, Norway. June 2012.

Floris van Breugel / Black and white photograph of Ice crystals up to 12 inches long along a small creek in a remote valley, Brooks Range, Gates of the Arctic National Park, Alaska, August 2014.

Floris van Breugel / Autumnal landscape with snow, Arrigetch Peaks region of Brooks Range, Gates of the Arctic National Park, Alaska, USA, August 2014.

Floris van Breugel / Black-billed shrike-tyrant (Agriornis montanus) perched in snowy tree with Mount Fitz Roy visible beyond. Patagonia, Argentina, June 2014.

David Noton / Autumn mist in Dee Valley (Dyffryn Dyfrdwy) at Horseshoe falls, near Llangollen, Denbighshire, Wales, UK, November 2013.

Hougaard Malan / Berlin falls on a summer afternoon. Panorama route, Mpumalanga, South Africa. March 2013.

Sam Hobson / Barbary ground squirrel (Atlantoxerus getulus) in arid mountain habitat. Fuerteventura, Canary Islands, Spain. April.

Dong Lei / Yellow poppywort (Meconopsis integrifolia) flowering, Qinghai-Tibet Plateau, Shiqu County, Sichuan Province, China, August.

Robert Thompson / River flowing from Lac de Gaube, Pyrenees National Park, Hautes Pyrenees, France, July 2013.

Enrique Lopez-Tapia / The forests of the Modi Khola river valley shrouded in fog. Annapurna Sanctuary, central Nepal, November 2011.

Kirkendall-Spring / Base of Lower Yellowstone Falls on the Yellowstone River in Yellowstone National Park, Wyoming, USA, July 2013.

Kirkendall-Spring / Lower Yellowstone Falls on the Yellowstone River viewed from Artist Point, Yellowstone National Park, Wyoming, USA, June 2013.

Kirkendall-Spring / Lower Yellowstone Falls with rainbow, on the Yellowstone River viewed from Lookout Point Trail, Yellowstone National Park, Wyoming, USA, June 2013.

Tim Laman / A traditional style house or 'honai' on the mountainside overlooking the Baliem Valley, Papua, Indonesia, Island of New Guinea. June 2010

Eric Dragesco,Eric Dragesco / Bharal (Pseudois nayaur) habitat, with people looking out into the distance, Shang Village, Hemis NP, at altitude of 4050m, Ladakh, India, October 2012

Yukihiro Fukuda / Japanese fireflies (Luciola cruciata) in flight at night, Japan endemic species, Hino-River, Nichinan-chou, Tottori, Japan, July

Ben Lascelles / Nightime long exposure of the Zhong Chu river below Zutruphuk Monastery, Mount Kailash. Tibet. June 2010

Ben Lascelles / Tsaparang (sometimes known as the mythical Shangri-la) was the capital of the ancient kingdom of Guge in the Garuda Valley, Ngari Prefecture, Western Tibet.

Ross Hoddinott / Newlands Valley and Causey Pike, Lake District National Park, Cumbria, England, UK. October 2012.

Peter Cairns / 2020VISION / View along Kirkstone Pass. Lake District National Park, Cumbria, September 2011.

David Noton / Les Aiguilles de Bavella, Corsica, France. June 2011.

David Noton / The Col de Bavella at dawn, Corsica, France. June 2011.

Florian Möllers / Fog over the steep slopes of a forested valley in Zhouzhi Nature Reserve, Qinling Mountains, Shaanxi, China 2006

Pete Oxford / Viales Valley with Tobacco crop, Sierra Rosario Mountain Range with Mojotes (limestone tree-covered knolls) UNESCO World Heritage site, Cuba, Caribbean, 2011

Eric Baccega / Eroded rocks at summit of Gorge de la Jonte with Peyreleau village in the background. Tarn, Cause, Cavennes, France.

Pascal Tordeux / A small valley in Alsace seen from a high angle. France.

Jeff Wilson / Director, Chadden Hunter, standing on wind eroded rock talking on radio to base camp, Dry Valleys, Antarctica, December 2009. Taken on location for the BBC series, Frozen Planet.

Jeff Wilson / Ventefact, a wind shaped rock, in the Dry Valleys, Antarctica, December 2009. Taken on location for the BBC series, Frozen Planet.

Jeff Wilson / Sun Dog, or Parhelion, caused by refraction of the sun's rays, more commonly seen in Antarctica, above glacier, Dry Valleys, Antarctica, December 2009. Taken on location for the BBC series, Frozen Pla...

Jeff Wilson / Frozen Planet team tent at Lake Hoare Camp, Dry Valleys, Antarctica, December 2009. Taken on location for the BBC series, Frozen Planet.

Jeff Wilson / Aerial view of the River Onyx, the only running river in Antarctica, Dry Valleys, December 2009. Taken on location for the BBC series, Frozen Planet.

Eric Dragesco / A view of the mountainous habitat of the Markhor. Naryn National Park, Kyrgyzstan, Central Asia, November 2009.

Inaki Relanzon / A high view of mist shrouding an autumnal valley. Cadi Natural Park, Catalonia, Barcelona province, Pyrenees, Spain, October 2005.

Adam Burton / River Barle in the Cornham Brake valley on a frosty winter morning, Simonsbath, Exmoor National Park, Somerset, England. December 2008

Wild Wonders of Europe / Schandy / Mount Ushba (4,710m) just on the Georgian side of the border, just before sunset, with low clouds in valleys, seen from Elbrus, Caucasus, Russia, June 2008. BOOK & WWE OUTDOOR EXHIBITION.

Wild Wonders of Europe / Benvie / Cut hay meadows surrounded by forests with clouds in the valleys, near Fliess, Naturpark Kaunergrat, Tirol, Austria, July 2008

Kirkendall-Spring / California Fan Palm trees {Washingtonia} in Mary's Grove, Anza-Borrego Desert State Park, California, USA

Jack Dykinga / Moran point in the snow at sunrise, with the North Rim in the background, Grand Canyon NP, Arizona, USA

Jack Dykinga / Snow covered Pinyon Pines (Pinus edulus) overlooking Shoshone Point at sunrise, East Rim, Grand Canyon NP, Arizona, USA