Chajnantor

In general, the antennas are kept on the same plateau as Chajnantor where they carry out their work, at 5000 meters of altitude. However, for deeper repairs, it is necessary to take them to the Operations Support Center, located at 2900 meters. In the photograph, a European antenna that appears to point to the Orion constellation. © ALMA (ESO / NAOJ / NRAO)