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Aerial view of Youghiogheny River Dam Pennsylvania
Autumn view of the Great Serpent Mound, the largest serpent effigy in the world, extending about 1,370 feet (420 m).  Originally though to have been constructed by prehistoric the Adena culture, scholars now think it was built by the Fort Ancient culture (1000-1650 CE), an Ohio Valley-based, mound-building society.  The Fort Ancient culture was influenced by the contemporary Mississippian culture society based along the mid-Mississippi River valley and extending as far north as the Great Lakes area.
The TVA Watauga Hydroplant power station by Watauga Lake on a summer day in Northeast Tennessee.
Reservoir spillway dumping overflow.
TVA Hiwassee Dam near Murphy, North Carolina
Road over the hydroelectric dam of the Villalcampo waterfall, Duero river, Castilla y León, Spain.
Old marl quarry with in the background the former ENCI cement factory in Maastricht which is converted into a public park with natural pools, with a dramatic sky during sunrise
Sakarya and dam in Turkey between oak trees
Construction site on riverbanks, going to be an hydroelectric power plant
hydroelectric power station, water gate
Large-scale construction of a mudflow protection dam in the Big Almaty Gorge in the Almaty mountains to protect the city from mudflows. Almaty, Kazakhstan - September 28, 2022
Lindoso reservoir of the Limia river between Spain and Portugal Baixa Limia Xeres natural park
Delaware Water Gap, Pennsylvania
The gravel pit
The George B Stevenson Dam Reservoir Lake in Austin, Pennsylvania.
DCIM\\100MEDIA\\DJI_0619.JPGRoad over the hydroelectric dam of the Villalcampo waterfall, Duero river, Castilla y León, Spain.
The Bureya Dam in the Russian Far East
Reservoir spillway dumping overflow.
Aerial view from over the dam at Lake Travis.
Peterborough, Canada.
The landmark Colebrook River Lake Dam in Connecticut during a new england winter.
Delaware Water Gap, Pennsylvania
Akita, Japan - July 29, 2023: Concrete placement or concrete casting at construction of Naruse dam in Akita, Japan
Panoramic view of a Construction site in winter for a new highway  in the country.
Fort Patrick Henry Dam, located in Sullivan County in Kingsport, Tennessee on the South Fork Holston River.
High Angle View Near the Popular River Arts District on the French Broad River in Asheville, Buncombe County, North Carolina
A power plant in a river valley.
Evolugen - La Lièvre - Dufferin Power Plant in Buckingham,Quebec , Canada
Aerial drone view at the Dam Releasing Flood waters - Austin Flooding fast moving dirty water - Austin Flooding at Tom Miller Dam
Crushed stone quarry machine from above.
Free Images: "bestof:...Power shovel at work on roadway at Norris Dam site on the Clinch River. The steep hillsides are characteristic of... - NARA - 532695.tif Scope and content"
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