You've been thinking about this, but it's hard to come to any conclusions without knowing what it leads to. Your guardian never seemed to have anything to hide; she's told you about her archaeological work in great detail. How it took her to unexplored parts of the world inhabited only by fierce beasts; how (after you expressed skepticism as to the veracity of this adventure-novel-esque characterization) most of the work involved trudging over unknown landscapes for days or weeks at a time trying to find sites they suspected were there; and of course, how she met a rival archaeological team from Myd Vuosh and how they learned to trust each other despite their nations having been at war mere seasons ago. If there's one thing you can be sure about, it's that whatever she intended here she shared it with your aunt. Maybe Ajact's house has a secret tunnel as well.
Had. Ajact is dead. You wish you'd thought to call your guardian while you still had phone reception. Even if she still didn't pick up, she might eventually listen to your message and realize she should go deep underground. With meteors falling everywhere, she's probably already realized it.
You're distracted from your gloomy thoughts by a sudden whiff of what you think is fresh air. Could this tunnel be ending?