Insulated thermal conduit piping carrying steam and diluent in one direction and molten or thinned bitumen in the other. These shiny, silver, raised pipelines are typical of SAGD operations. They spider from central steam generation and processing plants to wellheads sunk into bitumen deposits 100 metres or more below the surface.
Beautiful Destruction, p. 98
Suncor Firebag Project, Alberta, Canada
+57° 12′ 49.01″, -110° 50′ 14.40″