I plan on using Cryradon as a world that is discovered by my PC 's and see if they report it or
explore it or both, or exploit it!
If you plan to do that, I propose you take a look at the works of the Russian authors Strugazki, especially at
Hard to be a God and
Roadside Picnic. Both science fiction works present the possible and very likely reaction of cultures and societies that are "brushed slightly" / "touched" by a much more advanced culture.
By the way, the S.T.A.L.K.E.R. computer games are losely based on
Roadside Picnic; the Russian film
Stalker is the film of the novel (even if the novel takes place in Canada and the film in Russia) and in my opinion quite impressive.
If you are planning to watch the film, you should be aware that it was made in 1979, long before Spielberg's
Jaws.
Jaws changed the way films were made, most films after it usually have a significant higher storytelling pace and much more suspense. Thus the film
Stalker can sometimes seem to be boring and told with the speed of a dead three-legged turtle, but it is subtle, thoughtful and in my opinion it needs this pace.
Oh by the way, there is an official
Stalker RPG written by the Finnish author and game designer Ville Vuorela that I really like, but that is not really important to this discussion.