Guy Edwardes / Aurora borealis above sea stacks, Reykjanes Peninsula, Iceland. 2019.

Jack Dykinga / Erosion sculpted 'pot-hole' with reflection of clouds at sunset, Muley Point, Cedar Mesa, Bears Ears National Monument, Utah, USA, October 2018.

David Woodfall / Cheviot sheep grazing eroding machair at front of sand dunes, North Uist, Scotland, UK, June.

Guy Edwardes / Natural Arch, Siabost, Isle of Lewis, Outer Hebrides, Scotland, UK. March, 2015.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August, 2016.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August, 2016.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August, 2016.

Guy Edwardes / Seaweed covered rocks with Gaada Stack in background, Foula, Shetland, Scotland, UK. August, 2016.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August, 2016.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August, 2014.

Guy Edwardes / Stac a' Phris rock arch, Isle of Lewis, Outer Hebrides, Scotland, UK. March 2017.

Guy Edwardes / Footpath past The Needle, Quiraing, Trotternish Peninsula, Isle of Skye, Inner Hebrides, Scotland, UK. January 2014.

Guy Edwardes / Sea stacks at sunset, Mangurstadh beach, Aird Feinis, Isle of Lewis, Outer Hebrides, Scotland, UK. March 2014.

Guy Edwardes / Sea stacks, Mangurstadh beach, Aird Feinis, Isle of Lewis, Outer Hebrides, Scotland, UK. March 2014.

Guy Edwardes / Sea stacks, Mangurstadh, Aird Feinis, Isle of Lewis, Outer Hebrides, Scotland, UK. March 2014.

Guy Edwardes / Sea stacks, Mangurstadh, Aird Feinis, Isle of Lewis, Outer Hebrides, Scotland, UK. March 2014.

Guy Edwardes / Yesnaby Stack, Orkney, Orkney Islands, Scotland, UK. August 2014.

Guy Edwardes / Yesnaby Stack, Orkney, Orkney Islands, Scotland, UK. August 2014.

Guy Edwardes / Yesnaby Stack, Orkney, Orkney Islands, Scotland, UK. August 2014.

Guy Edwardes / The Drongs sea stacks silhouetted at sunset, Hillswick, Northmavine, Shetland, Shetland Isles, Scotland, UK. August 2014.

Guy Edwardes / The Drongs sea stacks silhouetted at sunset, Hillswick, Northmavine, Shetland, Shetland Isles, Scotland, UK. August 2014.

Guy Edwardes / The Drongs sea stacks silhouetted at sunset, Hillswick, Northmavine, Shetland, Shetland Isles, Scotland, UK. August 2014.

Guy Edwardes / Sea Stacks at Mangurstadh, Aird Feinis, Isle of Lewis, Outer Hebrides, Scotland, UK. March 2015.

Guy Edwardes / Sea Stacks at Mangurstadh, Aird Feinis, Isle of Lewis, Outer Hebrides, Scotland, UK. March 2015.

Guy Edwardes / Durdle Door, Dungy Head and Bats Head at sunset, Isle of Portland on horizon, Jurassic Coast, Dorset, England, UK. December 2014.

Guy Edwardes / Durdle Door and Bats Head at sunset, Jurassic Coast, Dorset, England, UK. December 2014.

Guy Edwardes / Stair Hole, West Lulworth, Isle of Purbeck, Dorset, England, UK. December 2010.

Guy Edwardes / Pulpit Rock, Isle of Portland, Dorset, England, UK. December 2010.

Guy Edwardes / Durdle Door at sunrise, Jurassic Coast, Dorset, England, UK. December 2014.

Guy Edwardes / Durdle Door by moonlight, Jurassic Coast, Dorset, England, UK. December 2014.

Guy Edwardes / The Pinnacles, Swanage, Dorset, England, UK. May 2014.

Jack Dykinga / Storm clouds at sunset over balancing eroded boulder, Texas Canyon, Little Dragoon Mountains, Chihuahuan Desert, Arizona, USA. September.

Jack Dykinga / Banded Navajo Sandstone slot canyon in the Escalante Canyon complex. Grand Staircase-Escalante National Monument, Utah, USA.

Jack Dykinga / Cap-rocks on the rim of the Escalante Canyon at dawn. Grand Staircase-Escalante National Monument, Utah, USA, October 2012.

Jack Dykinga / Devils Garden, eroded hoodoo sandstone formations. Grand Staircase-Escalante National Monument, Utah, USA. October.

Jack Dykinga / Eroded sandstone petrified sand dune formations at sunrise, Vermilion Cliffs National Monument, Arizona. USA.

Jabruson Motion / Aerial view of rainforest, showing forest clearance and start of erosion gully on hillside, Suaq Balimbing, Kluet Swamps, Sumatra, Indonesia. 2015.

Guy Edwardes / Porth Nanven at sunset, Cot Valley, Cornwall, England, UK. September 2015.

Juan Carlos Munoz / Toadstool shaped hoodoo a sunset, Grand Staircase-Escalante National Monument, Utah, USA, February 2015.

Juan Carlos Munoz / Horseshoe Bend in the Colorado river, near Page, Arizona, USA, February 2015.

Juan Carlos Munoz / Eroded sandstone patterns on walls of Lower Canyon, Antelope Canyon, Page, Arizona, USA, February 2015.

Steve O. Taylor (GHF) / Loss of topsoil in deforested land, Central Kalimantan, Indonesian Borneo. June 2010.

Paul Williams / View from plane of eroded salt dome, Kavir Desert, Iran, December.

Floris van Breugel / Ice cave with melt water running through, Mendenhall Glacier, Juneau, Alaska, USA, August 2014.

Hougaard Malan / Tugela falls surrounded by clouds on a misty morning. Royal Natal National Park, Drakensberg, South Africa. November 2010.

Hougaard Malan / Waterfall over deep, narrow gorge. Magwa Falls, Pondoland, Eastern Cape, South Africa. June 2012.

Hougaard Malan / Waterfall and autumn foliage with view to Mount Fitz Roy. El Chalten, Patagonia, Argentina. April 2013.

Floris van Breugel / Zebra Slot Canyon, Escalante National Monument, Utah, USA, November 2010.