The Trials of Koli (The Rampart Trilogy, 2) [Carey, M. R.]

T he earth wants to swallow us whole...

Koli never planned to set foot outside his small village. He knew that beyond its walls lay a fearsome landscape filled with choker trees, vicious beasts and Shunned men. But when he was exiled, he had no choice but to journey out into this strange world where every moment is a fight for survival.

And it's not just Koli's life that is threatened. Whole villages just like his are dying out.
But Koli heard a story, once. A story about lost London, and the mysterious tech of the Old Times that may still be there. If he can find it, there may still be a way for him to change his own fate - by saving the lives of those who are left.