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nonconmat: Silurian Slalom
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drhowser: Shau Tau Kok
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The National Archives UK: CO 1069-444-34
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The National Archives UK: CO 1069-444-31
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The National Archives UK: CO 1069-444-30
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The National Archives UK: CO 1069-444-29
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John 'Urbex' McJohnald: "Local Mine"
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John 'Urbex' McJohnald: "Richard's Mine"
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Pitheadgear: Henry Moore wartime mining commission 1942
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Maciej Dakowicz: Nun dinner - Pakokku, Myanmar
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Maciej Dakowicz: Smoke - Kolkata, India
AdamCohn: Men Working on Ship Near Tetrapod Breakwater, Phu Dong, Vietnam
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flallier: Mine de fer
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Maciej Dakowicz: Porter - Yangon, Myanmar
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flallier: Les berlines renversées
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flallier: Consolidations en béton
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flallier: Concrétions
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flallier: Un croisement de galeries concrétionné
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substormflow: Sun Beam
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pjshuleski: PATTERNS OF COLOR
NASA's Marshall Space Flight Center: A View of Earth From the Space Station
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minghong: 卑路乍街的防空洞
NASA's Marshall Space Flight Center: Apollo 16 Moon Panorama
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flallier: Bure (puits interne)
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Milton Sonn: Bendz, Wilhelm (1804-1832) - 1828 A Tobacco Get Together ( Funen Art Museum, Odense, Denmark)
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Milton Sonn: Bendz, Wilhelm (1804-1832) - 1831-32 Artists in Finck's Coffee House (Thorvaldsens Museum, Copenhagen, Denmark)
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Milton Sonn: Johansen, Viggo (1851-1935) - 1891 Happy Christmas (Hirschsprung Collection, Copenhagen, Denmark)
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flallier: Boisages
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flallier: Double niveau
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flallier: Ventilateur sur rails