The Underground "Railway"

The Underground Railway between the USA and Canada in the 1800's was not an actual railway, even though it did have passengers, conductors and stations.

                                                                 Harriet Tubman

https://www.historica-dominion.ca/content/heritage-minutes/underground-railroad?media_type=41&

http://education.nationalgeographic.com/education/multimedia/interactive/the-underground-railroad/?ar_a=1

http://teacher.scholastic.com/activities/bhistory/underground_railroad/plantation.htm