Nature, Outdoors, Scenery, Aerial View, Road, Freeway, Intersection, aquaduct, dam, development, down, duct, ecology, electricity, energy, engineering, environment, environmental, generation, green, hill, hydro, hydroelectric, hydroelectricity, industrial, industry, irrigation, metal, mountain, nature, oil, pipe, pipeline, preservation, pump, pumping station, shortage, siphon, station, steel, substation, supply, system, technology, transport, utility, water, macromolecule, facility, profession, improvement, service, tube, passage, application, conservation, deficit, feather, transformation, conduit, mixture, transportation, lipid, barrier, company, molecule, insufficiency, provision, magnitude, alloy, situation
Water pipeline in the mountain with pumping station and siphon.