In the 1800s people who helped fugitive slaves escape to the North along a secret network were called?

In the 1800s, people who assisted fugitive slaves in escaping to the North along a secret network were known as "conductors" on the Underground Railroad. This network consisted of abolitionists and allies who provided shelter, food, and guidance to escaping slaves. The term "Underground Railroad" itself refers to the covert routes and safe houses used to facilitate these dangerous journeys to freedom.