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Looking down the length of a gypsum mining tunnel (adit) inside an abandoned quarry.
Photo taken September 26th, 2022, Versam, Anterior Rhine Valley, Switzerland.
Luray Caverns in Luray, Virginia on April 9th, 2021.
The British military camp of the Second Boer War in Ladysmith, South Africa. Vintage photo etching circa 19th century.
The Sau reservoir, at historic low water levels
Male driver with reflective waistcoat looking at car trunk on roadside at night
A highway under construction, including a false tunnel, as seen from above
Arid terrain as a result of the drought with old and new bridge background in construction
Aydıntepe Yeraltı Şehri
Negev desert
Mine in the village of Stebnyk, Ukraine. Underground mine with light in Ukraine. Mining and Chemical Enterprise Polimineral in Ukraine
Moraine at Belvedere Glacier on the eastern side of Mount Rosa. Piedmont. Italy.
This photo was taken in the tunnel of the well that the ancient population used to save water in Megiddo, Israel, February 26, 2017
Snaking road to mountain gorge covered with evergreen forest and lush grass
Tha amazing salar de Uyuni
Many small mountain ranges covered in forests
Galapagos Islands - July 22, 2017: Lava tunnels of Santa Cruz Island
Vila Nova de Gaia seen from the Dom Luis II bridge with the boats on the bank of the Douro river
Image of Shower of sparks over stones inside a cave and with a yellow ring of light
Dumper truck and earth mover in a mining pit, Venezuela
From a gravel pit in Denmark
The Tunnel-canal de Besançon is a tunnel under the famous citadel. The Canal was bilt between 1878 and 1882.
Strasburg, Pennsylvania, USA, July 29, 2019 - View of an Engineer Standing Beside a Rusty Old Camel back Steam Engine That has Been Striped of it's Cab on a Sunny Day
Rusted abandoned old mining machinery.
Black and white andscape of a lower region in Macchu Picchu
Industrial sand mining, machinery
adventurous woman descending inside a deep cavern by metal stairs secured by a harness Costa Rica in Guanacaste
Looking down the length of an abandoned gold mine adit.
Geysers and Hot Springs at Yellowstone
Abandoned coal mine in East Coulee, Alberta, during day of springtime
Free Images: "bestof:TehidyPorticoCirca1900.png en Tehidy House Illogan Cornwall Portico circa 1900 Mine exploration photographs and mining history for mine explorers industrial"
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