Nick Upton / Forest caterpillar hunter (Calosoma sycophanta) feeding on a Gypsy moth caterpillar (Lymantria dispar) it has killed in a Holm oak tree, Bacu Goloritze ravine, Baunei, Sardinia, Italy, May.

Jerry Monkman / Telemark skiing (with dog following) "The Seven" in the Great Gully on the headwall of King Ravine, White Mountains, New Hampshire, USA. King Ravine is a glacial cirque on the north side of Mount Adam...

Nick Upton / Shepherd's shelter under limestone rock overhang. Bacu Goloritze ravine, Gennargentu National Park, Baunei, Sardinia, Italy. May 2018.

Nick Upton / Gypsy moth caterpillars (Lymantria dispar) feeding on and decimating Holm oak leaves (Quercus ilex), Bacu Goloritze ravine, Baunei, Sardinia, Italy, May.

Nick Upton / Forest caterpillar hunter (Calosoma sycophanta), a ground beetle hanging upside down as it forages in a Holm oak (Quercus ilex) tree in search of Gypsy moth caterpillar (Lymantria dispar) prey, Bacu G...

SCOTLAND: The Big Picture / Remnant pines in wooded ravine and view to Slioch, Torridon, Scotland, UK. November.

Juan Carlos Munoz / Roque Nublo sacred mountain, Tirajana ravine, Gran Canaria Island, The Canary Islands, Spain August 2018.

Juan Carlos Munoz / The Canarian Shepherd's Leap, a local tradition of walking and leaping across landscape using a pole. Roque Nublo sacred mountain, Tirajana ravine, Gran Canaria Island, The Canary Islands. August...

Juan Carlos Munoz / The Canarian Shepherd's Leap, a local tradition of walking and leaping across landscape using a pole. Salto del pastor canario, Tirajana ravine, Gran Canaria Island, The Canary Islands. August 201...

Juan Carlos Munoz / Guayadeque Ravine Natural Monument, Aguimes municipality, Gran Canaria Island, The Canary Islands. August.

Juan Carlos Munoz / Roque Bentayga sacred mountain, Tirajana ravine, Gran Canaria Island, The Canary Islands August 2018.

Juan Carlos Munoz / Roque Bentayga sacred mountain, Tirajana ravine, Gran Canaria Island, The Canary Islands, August 2018.

Juan Carlos Munoz / Ancient sculpture of a naked woman in the Prehistoric Interpretation centre, La Fortaleza Archaeological Site, Santa Lucia de Tirajana village, Tirajana ravine, Gran Canaria Island, The Canary Islands...

Guy Edwardes / Vingar Gorge and Bohinj railway bridge, Slovenia, October 2014.

Ashley Cooper / Avalanche on Machapuchare or Fishtail Peak in the Annapurna Himalaya, Nepal. It was caused by a massive block of glacial ice detaching from the summit cliffs, 29th December 2012.

Ashley Cooper / Avalanche on Machapuchare / Fishtail Peak in the Annapurna Himalaya, Nepal. It was caused by a massive block of glacial ice detaching from the summit cliffs. 29th December 2012.

Ashley Cooper / Avalanche on Machapuchare / Fishtail Peak in the Annapurna Himalaya, Nepal. It was caused by a massive block of glacial ice detaching from the summit cliffs. 29th December 2012.

Ashley Cooper / Avalanche on Machapuchare / Fishtail Peak in the Annapurna Himalaya, Nepal. It was caused by a massive block of glacial ice detaching from the summit cliffs. 29th December 2012.

Ashley Cooper / Avalanche on Machapuchare / Fishtail Peak in the Annapurna Himalaya, Nepal. It was caused by a massive block of glacial ice detaching from the summit cliffs. 29th December 2012.

Ashley Cooper / Raise Beck above Dunmail Raise, with large snow drift, Lake District, England, UK, April.

Ashley Cooper / Overspill, standing high and dry at the Hoover Dam on Lake Mead, following a four year long drought. Nevada, USA, September 2014.

Ashley Cooper / Intake towers for the hydro plant on the Hoover Dam, Lake Mead, Nevada, USA. The lake is at a very low level due to the four year long drought. September 2014.

Ashley Cooper / Lake Mead at a very low level due to the four year long drought. Lake Mead, Nevada, USA. September 2014.

Ashley Cooper / U shaped valley caused by rapidly retreating South Annapurna glacier in the Annapurna sanctuary, Nepalese Himalayas, Nepal. December 2012.

Ashley Cooper / U shaped valley caused by rapidly retreating South Annapurna glacier in the Annapurna sanctuary, Nepalese Himalayas, Nepal. December 2012.

Ashley Cooper / U shaped valley caused by rapidly retreating South Annapurna glacier in the Annapurna sanctuary, Nepalese Himalayas, Nepal. December 2012.

Ashley Cooper / The Hoover Dam and Lake Mead hydro electric plant, which is at very low levels following a four year drought. Border of Nevada and Arizona, USA.

Ashley Cooper / The Hoover Dam and Lake Mead hydro electric plant, which is at very low levels following a four year drought. Border of Nevada and Arizona, USA.

Ashley Cooper / The Hoover Dam and Lake Mead hydro electric plant, which is at very low levels following a four year drought. Border of Nevada and Arizona, USA.

Ashley Cooper / The Hoover Dam and Lake Mead hydro electric plant, which is at very low levels following a four year drought

Yva Momatiuk & John Eastcott / Rhyolite mountains with deep ravines, Landmannalaugar, Fjallabak Nature Reserve, Iceland

Yva Momatiuk & John Eastcott / Rhyolite mountains with deep ravines, Landmannalaugar, Fjallabak Nature Reserve, Iceland

Yva Momatiuk & John Eastcott / Rhyolite mountains with deep ravines, Landmannalaugar, Fjallabak Nature Reserve, Iceland

Yva Momatiuk & John Eastcott / Rhyolite mountains with lake and deep ravines, Landmannalaugar, Fjallabak Nature Reserve, Iceland

Cyril Ruoso / Ravine in Ribiera do Cedros, Queimadas, Laurisilva of Madeira UNESCO World Heritage Site, Madeira, March.

Cyril Ruoso / Sub-tropical rainforest in Shiratani Unsuikyo Ravine, Yakushima Island, UNESCO World Heritage Site, Japan.

Cyril Ruoso / Sub-tropical rainforest in Shiratani Unsuikyo Ravine, Yakushima Island, UNESCO World Heritage Site, Japan.

Cyril Ruoso / Sub-tropical rainforest in Shiratani Unsuikyo Ravine, Yakushima Island, UNESCO World Heritage Site, Japan.

Mike Read / Gordale Scar limestone ravine near Malham Yorkshire Dales National Park, Yorkshire, England, UK, July.

Graham Eaton / Gordale Scar, a ravine cut through Carboniferous limestone, partially created from a collapsed cave. Several springs in valley, with braided, meandering channels, Malham, Yorkshire, England, UK, Janua...

Graham Eaton / Gordale Scar, a ravine cut through Carboniferous limestone, partially created from a collapsed cave. Several springs in valley, with braided, meandering channels, Malham, Yorkshire, England, UK, Janua...

Nick Upton / Moya village, perched on clifftop above Moya ravine, Doramas Rural Park, Gran Canaria, Canary Islands, June 2016.

Nick Upton / Moya village, perched on clifftop above Moya ravine, Doramas Rural Park, Gran Canaria, Canary Islands, June 2016.

SCOTLAND: The Big Picture / Ferns, mooses and lichens in wooded ravine, Glenfeshie, Cairngorms National Park, Scotland, UK, October.

SCOTLAND: The Big Picture / Scots pine (Pinus sylvestris) trees growing in wooded ravine, Beinn Eighe National Nature Reserve, Wester Ross, Scotland, UK, October 2015.

SCOTLAND: The Big Picture / Scots pine (Pinus sylvestris) growing in wooded ravine, Beinn Eighe National Nature Reserve, Torridon, Wester Ross, Scotland, UK, October.

SCOTLAND: The Big Picture / Scots pine (Pinus sylvestris) trees growing in wooded ravine, Beinn Eighe National Nature Reserve, Wester Ross, Scotland, UK, October 2015.

SCOTLAND: The Big Picture / Scots pine (Pinus sylvestris) trees growing in wooded ravine, Beinn Eighe National Nature Reserve, Torridon, Wester Ross, Scotland, UK, October 2015.

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) wild male with collar, camouflaged in rocky ravine, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzstan

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) wild male with collar, camouflaged in rocky ravine, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzstan

Yva Momatiuk & John Eastcott / Sandstone buttes, ravines, and boulders in arid desert, Grand Staircase-Escalante National Monument, Utah

Pascal Tordeux / Hot air balloons above eroded limestone ravine, Cappadocia, Turkey, March 2006.

Mark Hamblin / 2020VISION / Waterfall in a wooded ravine, Abernethy NNR, Cairngorms National Park, Scotland, UK, August 2012.

Mark Hamblin / 2020VISION / Stream running through a wooded ravine, Abernethy NNR, Cairngorms National Park, Scotland, UK, August 2012.

Mark Hamblin / 2020VISION / Stream running through a wooded ravine, Abernethy NNR, Cairngorms National Park, Scotland, UK, August 2012.

Mark Hamblin / 2020VISION / Waterfall in a wooded ravine, Abernethy NNR, Cairngorms National Park, Scotland, UK, August 2012.

Mark Hamblin / 2020VISION / Stream running through wooded ravine on moorland, Abernethy NNR, Cairngorms National Park, Scotland, UK, August 2012.

Orsolya Haarberg / Ferns and other plants on rock over the Gudbrandsjuvet ravine with fast flowing water, Norddal, More og Romsdal, Norway. September 2012

Mark Hamblin / 2020VISION / Silver birch trees (Betula pendula) growing in ravine (clough) on upland moorland, Wester Ross, Scotland, May

Eric Dragesco / A footpath traversing a steep ravine above a mountain river. Naryn National Park, Kyrgyzstan, Central Asia, November.

Eric Dragesco / A path traversing a steep ravine above a mountain river. Naryn National Park, Kyrgyzstan, Central Asia, November.

Barry Mansell / Male Fireback crayfish (Cambarus pyronotus) very narrowly restricted to a series of small ravine tributaries along the eastern bank of the upper Apalachicola River, Northern Liberty County, Florida, U...

Barry Mansell / Male Fireback crayfish (Cambarus pyronotus) very narrowly restricted to a series of small ravine tributaries along the eastern bank of the upper Apalachicola River, Northern Liberty County, Florida, U...

Barry Mansell / Male Fireback crayfish (Cambarus pyronotus) very narrowly restricted to a series of small ravine tributaries along the eastern bank of the upper Apalachicola River, Northern Liberty County, Florida, U...

Jerry Monkman / Telemark skiing "The Seven" in the Great Gully on the headwall of King Ravine, White Mountains, New Hampshire, USA. King Ravine is a glacial cirque on the north side of Mount Adams. Backcountry spring...

Jerry Monkman / Skier climbs "The Seven" in the Great Gully on the headwall of King Ravine, White Mountains, New Hampshire, USA. King Ravine is a glacial cirque on the north side of Mount Adams. Backcountry spring sk...

Jouan & Rius / Rock detail of Uluru / Ayer's Rock, Uluru / Kata Tjuta National Park, Northern Territory, Australia

Jouan & Rius / Rock detail of Uluru / Ayer's Rock, Uluru / Kata Tjuta National Park, Northern Territory, Australia

Jerry Monkman / A young boy and his father hold salamander eggs from a vernal pool near Gulf Brook Ravine in Pepperell, Massachusetts, USA.

Jerry Monkman / Snowboarding in Tuckerman Ravine, White Mountains, New Hampshire, USA. model released

Jerry Monkman / A boy holds salamander eggs near Gulf Brook Ravine in Pepperell, Massachusetts, USA.

Jerry Monkman / A man walking in snowshoes in Tuckerman Ravine, White Mountains, New Hampshire, USA. model released

Yva Momatiuk & John Eastcott / Adelie Penguin (Pygoscelis adeliae) jumping off of rock ledge, Armstrong Reef, western Antarctica

John Downer / Domestic Indian elephant {Elephas maximus} towing coach out of ravine, India

Niall Benvie / Waterfall in Wadi David, Ein Gedi, Israel.

Niall Benvie / Waterfall in Wadi David, Ein Gedi, Israel.

Tui De Roy / Andean Cock-of-the-rock (Rupicola peruvianus) female and chicks in nest on ravine wall, Pichincha Volcano slope, Choco Darien cloud forest, Andes Mountains, Ecuador

John Downer / Ravine with trees in autumn colours. Shokawa, Japan

Cyril Ruoso / Ravine in primary forest, Ribeira dos Cedros, Madeira

Yva Momatiuk & John Eastcott / Sandstone formations of pinnacles, buttes and ravines, Coyote Buttes, Arizona

Yva Momatiuk & John Eastcott / Sandstone formations of pinnacles, buttes and ravines, Coyote Buttes, Arizona

Yva Momatiuk & John Eastcott / Sandstone formations of pinnacles, buttes and ravines, Coyote Buttes, Arizona

Yva Momatiuk & John Eastcott / Adelie Penguin (Pygoscelis adeliae) jumping off of rock ledge, Armstrong Reef, western Antarctica

Joel Sartore / Photo Ark / Ravine salamander (Plethodon richmondi) portrait, private collection. Captive, occurs in USA.

Graham Eaton / Luds Church, a ravine in Carboniferous, Namurian sandstone, near Leek, Staffordshire, UK. August, 2022.

Nick Upton / Dense, damp coastal woodland or Tilio-Acerion ravine forest, with a luxurious carpet of ferns and many epiphytes, Oxwich National Nature Reserve, The Gower, Wales. July.

Nick Upton / Dense, damp coastal woodland or Tilio-Acerion ravine forest, with a luxurious carpet of ferns and many epiphytes, Oxwich National Nature Reserve, The Gower, Wales. July.

Juan Carlos Munoz / Aerial shot of the autumnal forest within the Urdiceto Ravine and Bielsa Valley, Pyrenees Mountains, Huesca Province, Aragon, Spain, November.

Juan Carlos Munoz / Aerial view of waterfall in the Urdiceto Ravine surrounded by mixed autumnal forest, Pyrenees Mountains, Aragon, Spain. November.

Ugo Mellone / Ravine in the Sahara desert at night, Djebel Rich, Southern Morocco, Africa. March, 2020.

Richard Du Toit / A donga or steep-sided ravine caused by erosion, Itala Game Reserve, KwaZulu-Natal, South Africa. Dongas are usually dry except in the rainy season.