Beyond the Collapse by Rei Rosenquist

While hunting for rotten firsh, Bon finds a tool with strange inscriptions. Rebel friend, Strayer will know what to do. Bon takes the tool and heads for the local train.
Aboard, the empty train, Bon and tool rattle out beyond the Collapse.
At the last stop, someone else gets on.
No one ever gets on but Bon.
Keeping their secrets to themselves, the two strangers get off at the end of line in search of Strayer and answers.
What will they find? Betrayal? Friendship? Or something far more magical?