So I'm looking into some Gen 3 stuff and I'm trying to find out more info about Altering Cave. Supposedly things called Wonder Spots were planned that were to be real life areas where you could go and download Pokemon to appear in the cave via Mystery Gift, but they were never hosted anywhere in the world so the feature went unused. My problem now is I can't find any promotional material that mentions these Wonder Spots, so I don't know how people know this was supposed to be the case. Does anyone have any more information about them and if they were ever announced?