This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
blackandwhite monochrome outdoor black and white Full Description The Altitude Wind Tunnel at the Aircraft Engine Research Laboratory now NASA Glenn Research Center in Cleveland OH under construction in . View taken facing southeast showing scaffolding for refrigerant line construction to west end of tunnel and application of insulation