The site is owned by the French Air Force. It is controlled from a site near Lyon, about away. It has a heliport, and accessible by helicopter. There is also a private road, which starts at the Col du Béal. This road cannot be used when there is heavy snow of more than . Another option is using a hiking trail, which can be used by tracked vehicles. Since the site is of strategic importance to the French army, it has been "hardened". This means that it has its own power supply and can withstand an attack.