Two technicians finish digging a trench in the snow with shovels, in front of an outdoor electrical box. In summer, a team of around 25 technicians from various trades carry out various maintenance tasks at the resort. This includes the electrical distribution network, which is put to the test by the cold and temperature variations, and whose needs, particularly for scientific installations, are constantly increasing. Manual labor on Concordia is particularly demanding, obviously because of the cold, but also because of the lack of oxygen. Concordia Antarctic Research Station, Dome C plateau, East Antarctica.