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Excavation terraces in open pit gold mine in Rosia Montana, Romania
Mesa Verde, Colorado, USA - July 23, 2018: Adult male tourist climbs a short ladder while exploring Balcony House, an Ancient Puebloan (Anasazi) cliff dwelling that was inhabited until the 13th century, Mesa Verde National Park
Coal mine winding tower, details
Foggy Autumn Morning - Fall - Leaves Changing Colors - Horizontal Landscape - Backlit
Just an early evening shot of the Sinclair Dam at night. Sinclair Dam is part of beautiful Lake Sinclair in Milledgeville, Georgia.
Silo's industry
Photo taken September 26th, 2022, Versam, Anterior Rhine Valley, Switzerland.
Different colorful vegetables in cardboard bag. Healthy food concept.
Discovered in Mogi Mirim, from a deposit of weapons and supplies, from the war of 1932. It was used by the revolutionaries to store ammunition and was located a few kilometers before the railway station guarded by the national hole.
Construction site of chemical plant
Luray Caverns in Luray, Virginia on April 9th, 2021.
Rusty metal structure  on floor
The landingplace for the elevator to the bottom of the magma chamber at 120 m deep. (camera dropzone)
Bacho Kiro cave, Bulgaria - September 10, 2021: Sculpture  at the entrance of Bacho Kiro cave near Dryanovo monastery.
view of an open pit marble quarry showing heavy duty equipment and rock.
Coal mine underground corridor with conveyor system
Aydıntepe Yeraltı Şehri
Bavaria, Germany, 15.02.2020: Inside of a wind turbine in a forest nearby Munich.
Old railroad tunnel on Olympic discovery trail
Zlatibor ,Serbia - Novembar 23 ,2016:\
Exploration of mountain caves during tourist hikes.
Close up of a mud pool ground in Waiotapu Geotermal Valley, Rotorua, New Zealand.
The Sau reservoir, at historic low water levels
A aerial view of small plane flying over dense lush tropical forest
Ruined, Old, Reservoir, Yazd, Iran
Blue Ridge Parkway Overlook near Boone and Blowing Rock  NC
Cement Factor
Aerial view. African rainforest. A construction site in Africa.  African rainforest.
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