Considering that Vilcabamba is a real life city once inhabited by the Peruvian Inca, it makes me curious about its depiction in the Tomb Raider games. I have three ideas that could potentially explain the entire ordeal:
There's only one Vilcabamba in the TR universe, and it's the one depicted in TR1, strictly ruled by Qualopec.
Aside from their coincidental name, there are two separate Vilcabambas that don’t have much of a connection to each other. However, it's possible they could share a connection; for example, the real life version might've served as a diversion for the one in the Andes as a form of protection against Spanish colonisation of the Americas.
There appears to be two distinct Vilcabambas, but they're actually connected in ways that've been lost to time (e.g. a labyrinthine complex of subterranean tunnels) and are awaiting rediscovery.
I'm leaning more towards the third idea or an excellently crafted combination of the second and third ideas. However, the first one I presented could also be plausible because there's definitely some significant alternative history stuff within the lore of Tomb Raider and its sequels.
