Dear 100 Hour Board,
In a high school English class my teacher was talking about a book that sounded interesting and I wanted to read it but forgot what it was called, as well as the name of the author. My attempts to find it have been for naught which brings me here. This question is mildly spoilerific I might add, but since I don't know the book I'm not sure exactly what I'm spoiling.
From what I can remember the plot was something like a group of people are living in a forest and it's a fairly... rustic society I suppose. Plot happens but I have no idea what, and at the end the reader finds out (plot twist!) that these are actually the remains of humanity after some apocalyptic or dystopia-making event because the end reveals the ruins of the formerly advanced society, after the whole book makes it sound like it's set in the past.
So my question is, could you kindly tell me the title and author of said book? I'm pretty sure it's not /that/ obscure of one but like I said I haven't been able to find it.
I'd just like to unhelpfully point out that this sounds pretty similar to Margaret Peterson Haddix's novel Running Out of Time, except the old timey village was secretly in the middle of 1996 civilization, not a post-apocalyptic setting. Maybe if you got some plot summary mixed up this is what you're thinking of? It's a pretty well-known book.
After scouring the internet and racking my brain for too long, I came up with...nothing. I think your best bet is to check out Concealocanth's recommendation of Running Out of Time. Your description also reminded me of The City of Ember by Jeanne DuPrau, but it has quite a few things different from what you're thinking. If it's not either of those, it must be something pretty obscure. Good luck!