Soundscape: Paranal VISTA exterior

Ventilation sounds are very characteristic at the observatories, either natural ones of gusts of wind or artificial ones of cooling systems, are the most frequent vibrations breaking the omnipresent silence of the desert. Whenever you are approaching a telescope at the mountain top, like VISTA (Visible and Infrared Survey Telescope for Astronomy), this sound will welcome you as soon as you get out of the car.