These Chinese power grid workers don't seem too fazed by the dizzying heights of the world's tallest pylons. The men are required to work at a height of 885ft (270 metres - 90-storeys) as they install a crossing tower for a new line of ultra high voltage cable stretching from Anhui province to Shanghai - a distance of 268 miles.
The tower is just one of 1,421 starting west from Huainan. The men have until the end of 2013 to finish the ambitious project.
The workers are strapped into safety harnesses but use flimsy rope ladders to go up and down the pylons. More than 500billion KWH of electricity per year will travel along the cables.