Ok so i went to the guardian site at the location stated above in the title, there are some sort of energy pylons located around the base, 6 to be exact. shooting at one will cause a timer to start, however what you ned to do is shoot at them continuously until they are fully charged. there are 3 located pretty close to each other in the middle of the base, those should be easy enough to find, the other 3 are located at areas around obvious points of interest at the base ( i would create a diagram if anyone has an image of the whole base). once all 6 pylons have been activated a small hole will open up in the main courtyard in front of the structure which is the shape of an ancient relic, drop one from your srv whilst above the hole and the data bank will open up, i haven't done much with it other than scan it however and the area becomes filled with sentinels, because of this and the fact i did it about 10 minutes ago more research is needed, and i apologise for this not being the clearest set of instructions. if i am the first to discover this i shall create a better set to help people replicate it. images below
https://imgur.com/a/luuTS - courtyard area with pylons (countdown already started)
https://imgur.com/a/PvRn5 - charged pylon after being shot repeatedly
https://imgur.com/a/eO2i6 - ancient data terminal once all the pylons are charged and ancient relic is placed in the hole
https://imgur.com/a/luuTS - courtyard area with pylons (countdown already started)
https://imgur.com/a/PvRn5 - charged pylon after being shot repeatedly
https://imgur.com/a/eO2i6 - ancient data terminal once all the pylons are charged and ancient relic is placed in the hole