As I remember it, some superhero comic featured the mythical city of Agartha.
I think, in this version, it was a city tucked away in some mountains, maybe under some sort of shield or dome?
I can't remember whether the heroes had a base there of if they were trying to protect it.
I've been trying to find it, but I can't even remember which comic it was... I think it was a Marvel comic. I read in in Sweden in the eighties, and it was probably in Swedish, so probably X-Men or Fantastic Four. I believe it was a team of heroes (perhaps the X-Men), not a single protagonist like Spiderman.
I have tried to search for it but I can't it, so I'm starting to think I remember it wrong, maybe it wasn't Agartha at all, but some other legendary city.
Can anybody help me find what comic it was, and maybe point to specific stories?
Edit: I updated the topic, hoping this might help anybody else who confuses Agartha with Attilan. Of course, it might just a be me.