Morley Read / Slow motion clip of a queen termite (Isoptera) in chamber, with workers gathering liquid containing pheromones exuded from the queen's rear end, Ecuador. (non-ex)

Morley Read / Queen Termite (Isoptera) tended by workers in nest chamber, Napo Province, Ecuadorian Amazon. (non-ex)

Guy Edwardes / Pentre Ifan, a Neolithic burial chamber, Nevern, Pembrokeshire, Wales, UK. November 2008

Danny Green / Atlantic Puffin (Fratercula arctica) looking down a nesting chamber, Skomer Island, Wales, UK, May

Guy Edwardes / Lanyon Quoit ancient burial chamber, Madron, Cornwall, England, UK. September 2015.

Vincent Grafhorst / Stalagmites and stalactites in cave chamber, Gcwihaba Caves, Botswana

Paul D Stewart / Aerial view of Grand Prismatic thermal spring in Yellowstone National Park, USA. The bright colours are natural, coming from thermophile bacteria in the water. People can be seen walking on the raised...

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} tending chick in brood chamber on feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} chick emerging from brood chamber on adult's feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} male watching as its egg begins to hatch in brood chamber on feet, Antarctica

Frederique Olivier / Emperor penguins {Aptenodytes forsteri} two adults with chicks emerging from brood chamber on their feet, Antarctica

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber to lay egg. Savo Island, Solomon Islands.

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber to lay egg. Savo Island, Solomon Islands.

David Tipling / Man holding Melanesian megapode (Megapodius eremita) egg dug out of nest chamber in sand. Savo Island, Solomon Islands.

David Tipling / Savo Islander digging out nest chamber of Melanesian megapode (Megapodius eremita) to harvest egg. Savo Island, Solomon Islands, South Pacific

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber in sand to lay egg. Savo Island, Solomon Islands.

David Tipling / Melanesian megapode (Megapodius eremita) female excavating nest chamber in sand to lay egg. Savo Island, Solomon Islands.

Ashley Cooper / Men an Tol stone near St Just in Cornwall, UK. This late Neolithic monument is thuoght to have been part of a now disappeared stone circle or an entrance to an old burial chamber

Doug Wechsler / Sweat bee nest (Augochlora pura) in rotten log, entrance to chamber on right, Fort Washington State Park, Montgomery County, Pennsylvania, USA, June.

Graham Eaton / Carreg Samson, a 5000 year old Neolithic dolmen or burial chamber, near Abercastle, Pembrokeshire, Wales, UK, June

Graham Eaton / Pentre Ifan a Neolithic burial chamber, ported dolmen, chambered tomb, Aberteifi, Pembrokeshire, Wales, UK, June

Graham Eaton / Pentre Ifan a Neolithic burial chamber, ported dolmen, chambered tomb, Aberteifi, Pembrokeshire, Wales, UK, June

Gary K. Smith / Beekeeper inspecting brood chamber on a Honey bee hive. Norfolk, England, June 2017.

Gary K. Smith / Beekeeper inspecting brood chamber on a honey bee hive. Norfolk, England, June 2017.

Gary K. Smith / Honey Bee colony showing female worker bees on brood chamber comb. Norfolk, England, June 2017.

Gary K. Smith / Beekeeper inspecting brood chamber on a honey bee hive. Norfolk, England, June 2017.

Gary K. Smith / Beekeeper inspecting brood chamber on a honey bee hive. Norfolk, England, June 2017.

Gary K. Smith / Beekeeper inspecting brood chamber on a honey bee hive. Norfolk, England, June 2017.

Gary K. Smith / Honey Bee colony showing female worker bees on brood chamber comb. Norfolk, England, June 2017.

Phil Savoie / St Lythans Burial chamber, a 6000 year-old Neolithic chamber with a 35 ton capstone at dawn, Vale of Glamorgan, Wales, UK, February

Phil Savoie / Herringbone stonewall at Tinkinswood Neolithic Burial Chamber from 6000 years ago. Wales, UK. February.

Steve Downer / Female Ground spider (Gnaphosidae) in leaf chamber guarding her egg sac, England, UK.

Steve Downer / Female Ground spider (Gnaphosidae) sealing her egg sac into a leaf chamber, England, UK.

Steve Downer / Female Ground spider (Gnaphosidae) sealing her egg sac into a leaf chamber, England, UK.

Floris van Breugel / Fruit fly (Drosophila melanogaster) tethered in LED illuminated chamber which stimulates moving visual patterns. Behind the fly is a camera, which is used to record its wing beat amplitude a rough me...

Juan Carlos Munoz / Kenmare stone circle, Kenmare, Iveragh Peninsula, County Kerry, Republic of Ireland. September 2015.

Paul D Stewart / Giant crystal formations of selenite hang in the crystal chamber of lechuguilla cave in New Mexico, USA. The caves have been found to be partly formed by the activities of extremophile bacteria that l...

Danny Green / Atlantic Puffin (Fratercula arctica) in a nesting chamber, Skomer Island, Wales, UK, May

Danny Green / Atlantic Puffin (Fratercula arctica) covered by mud from its partner digging out their nesting chamber / burrow, Skomer Island, Wales, UK, April

Danny Green / Atlantic Puffin (Fratercula arctica) covered in mud after digging its nesting chamber, Fair Isle, Scotland, UK, May

Guy Edwardes / Lanyon Quoit ancient burial chamber, Madron, Cornwall, England, UK. March 2010.

Guy Edwardes / Sunrise casting rays through stones of Lanyon Quoit ancient burial chamber, Madron, Cornwall, England, UK. February 2006.

Christophe Courteau / La Roche-aux-Fees (Fairies' rock) dolmen / tomb. Esse, Ille-et-Vilaine, Brittany, France, December 2013.

Jan Hamrsky / Darner dragonfly (Aeshnidae) nymph swimming by pumping water out of its anal chamber, Europe, July, controlled conditions.

Steve O. Taylor (GHF) / Bandiagara burial chambers. Mali, 2005-2006.

Steve O. Taylor (GHF) / Dogon burial site. Bandiagara, Mali, 2005-2006.

Steve O. Taylor (GHF) / Interior of Dogon burial chamber. Bandiagara, Mali, 2005-2006.

Steve O. Taylor (GHF) / Dogon burial chamber. Bandiagara, Mali, 2005-2006.

Vincent Grafhorst / Stalagmites and stalactites in cave chamber, Gcwihaba Caves, Botswana

D. Parer & E. Parer-Cook / Australian Brush Turkey (Alectura lathami) three-day old chick after hatching underground and digging a chamber rests before heading to surface, Atherton Tableland, Queensland, Australia

Mark Moffett / Marauder Ant (Pheidologeton diversus) nest chamber showing brood, prey and large replete workers, Borneo

Michael Pitts / Park ranger with Komodo dragon (Varanus komodoensis) hatchlings taken from egg chamber 10 foot underground, being photographed, taken on location for TVNZ shoot 'Dragons of Komodo', Komodo Island, Ind...

Michael Pitts / Park ranger with Komodo dragon (Varanus komodoensis) hatchlings taken from egg chamber 10 foot underground, taken on location for TVNZ shoot 'Dragons of Komodo', Komodo Island, Indonesia, June 2009

Floris van Breugel / A woman canyoneer looking upwards in a chamber of light Pine Creek Canyon, Zion National Park, Utah, June 2012. Model released

Solvin Zankl / GEOMAR / Dr. Hennige (right) and Dr. Roberts (left) from Heriot-Watt University seal a respiration chamber to assess metabolism of cold water coral (Madrepora oculata), Norway, September 2011, editorial use on...

Peter Lewis / Stones of Pentre Ifan, a megalithic Burial Chamber / Cromleck / Quiot at sunset with sun reflected in Cardiganshire Bay in the background, nr Newport, Pembrokeshire, Wales, UK, June 2010

Peter Lewis / Stones of Pentre Ifan, a megalithic Burial Chamber / Cromleck / Quiot at dawn, nr Newport, Pembrokeshire, Wales, UK, June 2010

Peter Lewis / Carreg Sampson, a megalithic Burial Chamber / Cromleck / Quiot, nr Abercastle, Pembrokeshire, Wales, UK, June 2010

Peter Lewis / Carreg Coetan, a megalithic Burial Chamber / Cromleck / Quiot in a housing estate in Newport, Pembrokeshire, Wales, UK, June 2010

Piotr Naskrecki / Ant Plant (Hydnophytum sp) caudex with cross-section showing smooth-walled chambers that provide home for ants which leave behind their nutrient-rich waste products, Papua New Guinea, composite image

Simon Colmer / Bright-line Brown-eye / Tomato moth (Lacanobia oleracea) caterpillar inside plum tomato. Side of tomato has been cut away to show the feeding chamber the larva creates. Sussex, UK

Doug Wechsler / Mason bee (Osmia sp) mud nest showing chambers and larvae. Penn Valley, PA, USA

Chien Lee / Deer Cave with an opening chamber over 120 meters is home to an estimated five million bats, Gunung Mulu National Park, Malaysia

Robert Thompson / Man in the New Chamber, Marble Arch Caves, County Fermanagh, Northern Ireland, UK, February 1991

Nick Upton / Biogas plant with fermenting chamber for methane production from maize silage, with silage hopper in foreground. Cornau, near Vechta, Lower Saxony, Germany.

Peter Lewis / 'Devils Den' in winter snow. The only dolmen / burial chamber in Wiltshire, England, UK, February 2009.

Peter Lewis / 'Devils Den' in winter snow. The only dolmen / burial chamber in Wiltshire, England, UK, February 2009.

Merryn Thomas / Buzza Hill Burial Chamber (later Neolithic – early Bronze Age) and view over Hugh Town. St Mary's, Isles of Scilly, December 2009.

Merryn Thomas / Buzza Hill Burial Chamber (later Neolithic – early Bronze Age) and view over Hugh Town. St Mary's, Isles of Scilly, December 2009.

Gary K. Smith / Common Wasps {Vespula vulgaris} flying from underground nesting chamber, Norfolk, UK, August

Robert Thompson / Larva of Elephant hawk-moth {Deilephila elpenor} in pupation chamber, Annagarriff Wood NNR, Peatlands, Co Armagh, Northern Ireland

Robert Thompson / Larva of Elephant hawk-moth {Deilephila elpenor} in pupation chamber, Annagarriff Wood NNR, Peatlands, Co Armagh, Northern Ireland

Robert Thompson / Larva of Elephant hawk-moth {Deilephila elpenor} in pupation chamber, Annagarriff Wood NNR, Peatlands, Co Armagh, Northern Ireland

Angelo Gandolfi / Dolmen de Axeitos stone burial chamber, Galicia, Spain. July 2008.

Stephen Dalton / Water spider (Argyroneta aquatica) underwater, in air bubble bell chamber, Argyronetidae

Stephen Dalton / Water spider (Argyroneta aquatica) underwater, with air bubble bell chamber, Argyronetidae

Merryn Thomas / Poulnabrone Dolmen, a Neolithic portal tomb on the Burren (large carboniferous limestone pavement), County Clare, Republic of Ireland, May 2009.

Merryn Thomas / Poulnabrone Dolmen, a Neolithic portal tomb on the Burren (large carboniferous limestone pavement), County Clare, Republic of Ireland, May 2009.

Albert Lleal / Long Horn Beetle (Rhagium sp) with pupal chamber on the inside of the bark of a tree

Eric Baccega / Le Dehus burial chamber and Neolithic tomb (6500 BC), Guernsey, Channel Islands. May 2009.

Eric Baccega / Les Fouaillages L'Ancresse burial chamber and Neolithic tomb (6500 BC), Guernsey, Channel Islands. May 2009.

Peter Lewis / Trethevy Quiot, a Neolithic burial chamber, Bodmin Moor, Cornwall,UK

Peter Lewis / Trethevy Quiot, a Neolithic burial chamber, Bodmin Moor, Cornwall, UK

Peter Lewis / The Chun Quiot, a Neolithic burial chamber dating from 3500 BC, on open moorland, West Cornwall

Peter Lewis / The Chun Quiot, a Neolithic burial chamber dating from 3500 BC, on open moorland, West Cornwall

Tony Heald / Gomantong caves, part of main chamber roof, Sabah, Borneo, September 2008

Gary K. Smith / European Honey bee {Apis mellifera} brood chamber in hive, Norfok, UK, September

Gary K. Smith / European Honey bee {Apis mellifera} brood chamber in hive showing larvae, Norfok, UK, September

Gary K. Smith / Beekeeper inspecting brood chamber of Honey bee hive {Apis mellifora} Norfolk, UK, August

Gary K. Smith / Beekeeper applying anti varroa mite gel in brood chamber of Honey bee hive {Apis mellifora} Norfolk, UK, September

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} feeding chick in brood chamber on feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} feeding chick in brood chamber on feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} adult with chick emerging from brood chamber on feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} chick emerging from brood chamber on adult's feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} two chicks emerging from brood chamber on adult's feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} two chicks emerging from brood chamber on adult's feet, Antarctica