So I’m sure there’s a thread for this somewhere (and I seem to recall some mention of some kind of pillar or something), but I was curious. Just how difficult is it to travel betwixt the Neath and the Surface? Are there secret networks of caves, or well-known byways and entries? By the preponderonce of spies and agents of numerous nations (and the ease with which my d__nable aunt kept getting back down here…), it seems like there’s at least one clearly established and (relatively) easily accessible route. If I’ve missed some obvious bit of knowledge or thread somewhere, please, point me in the right direction!
The two official paths are the Travertine Spiral and the Cumaean Canal, which you can read about here! There are other paths, used by criminals and refugees and who knows who else, but those are the major commercial routes.