<A HREF="http://www.nps.gov/undergroundrr/contents.htm">Click here: Underground Railroad: Special Resource Study</A> History of the Underground Railroad The Underground Railroad was perhaps the most dramatic protest action against slavery in United States history. The operations of clandestine escape networks began in the 1500s, and was later connected with organized abolitionist activity of the 1800s. http://www.niica.on.ca/csonan/UNDERGROUND.htm Bright Star