What Was the Underground Railroad?

Which of these facts are true?
It was a railroad with not trains or tracks
Trips on this railroad always headed north
It was the route to freedom for thousands of slaves

No one knows where the term Underground Railroad came from – there were no trains or tracks, only “conductors” who helped escaping slaves to freedom. Including real stories about “passengers” on the “Railroad,” this book chronicles slaves’ close calls with bounty hunters, exhausting struggles on the road, and what they sacrificed for freedom. With 80 black-and-white illustrations throughout and a sixteen-page black-and-white photo insert, the Underground Railroad comes alive!