Underground railway
Encyclopedia
Underground railway may refer to:
- The Underground RailroadUnderground RailroadThe Underground Railroad was an informal network of secret routes and safe houses used by 19th-century black slaves in the United States to escape to free states and Canada with the aid of abolitionists and allies who were sympathetic to their cause. The term is also applied to the abolitionists,...
, a network of clandestine routes by which African slaves in the 19th century United States attempted to escape - Rapid transitRapid transitA rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...
, urban railways that sometimes use tunnels