Brave window cleaners dangle thousands of feet above the Grand Canyon - while giving its 'Skywalk' a spring clean.
Technicians cleaned more than 40 panes of glass while taking in the awe-inspiring views of the Colorado River 4000ft below.
The horseshoe-shaped structure, which cost $30M to build and juts out 70ft, was opened in March 2007 and offers visitors stomach-churning views through its glass bottom.
The Skywalk is cleaned by Abseilon USA, a Phoenix-based company who belong to the Society of Professional Rope Access Technicians.
Abseilon's eight technicians - two of whom carried out the cleaning itself - operate a two-line system, which offers workers '200 per cent fall protection'. This system means despite the stomach-churning images and video that the technicians were able to capture, the process itself is extremely safe.
Should an error occur in any part of a technician's rope system, they still have at least one additional system to fall back on.