These New York workmen look like they are involved in a death-defying circus act.
But it is all part of the day job for the workmen who are inspecting a crane being used in the construction of 1 World Trade Centre in New York.
The photo was taken from the 93rd floor of the new building, which is now taller than the Empire State Building - seen in the skyline.
The 104-storey skyscraper, in Lower Manhattan, is due for completion in 2013. It will be the tallest building in the Western Hemisphere and the third tallest in the world.
It is being built in the north west corner of the new World Trade Centre site, which will feature three other high-rises, and a September 11 memorial and museum on the site where the Twin Towers once stood.