SamwiseFilmore wrote: ... This was mentioned by another user. ...

Really? I seached for this on the forum before, but couldn't find it.

Dragonovith wrote: ... only Spider Pits spawn there. ...

That's what I mainly was looking for. The rest of Mordor has lots of towers and camps, so no need to have them in Nan Ungol too. But if you want to hire a spider for the achievement and can't because you won't find a single pit, that's frustrating.

Perhaps they need some special kind of condition to spawn, which is never met in Nan Ungol?

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