A powerline builder in south-west Russia filmed his team's efforts in erecting a number of pylons above the snowline in the Caucasus mountains, over 3000m (10,000 feet) above sea level.

Video, filmed in March, shows how workers and supplies must be brought weekly by helicopter to the remote mountain area, as well as how snowy weather conditions caused difficult delays.

The filmer commented of the issues: "The hardest thing at high altitude is lack of oxygen."

Construction of high-voltage power lines at an altitude of over 3000 meters

You need to pull the cable down to pull the wire to the top, all this has to be done manually, since there is a lot of snow, the vehicle is stuck.

The helicopter brought squares to assemble the pillars

we go down the mountain, without stopping ...

The hardest thing at high altitude is lack of oxygen.