Les tunnels secrets d'Exeter sont un mystère majeur car ils n'ont jamais été trouvés ou découverts, ils ne sont que des rumeurs existantes. L'histoire remonte à longtemps et on dit que les tunnels sont liés au chemin de fer souterrain. Robbins Paxton Gilman s'attaque même à la légende de ces tunnels dans son récit: The Old Logg House by the Bridge.
On a supposé que les tunnels souterrains secrets se trouvaient près de Franklin & Clifford Street. La légende stipule que les tunnels se croisent dans le sous-sol de la maison de la garnison de Gilman qui a été construite en 1709. Le ministère de l'Intérieur des États-Unis a entrepris un projet pour documenter et enquêter sur la maison. Leur recherche n'a jamais été révélée publiquement!
The Underground Railroad was a network of secret routes and safe houses established in the United States during the early to mid-1800s, and used by African-American slaves to escape into 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, both black and white, free and enslaved, who aided the fugitives. Various other routes led to Mexico or overseas. An earlier escape route running south toward Florida, then a Spanish possession (except 1763–83), existed from the late 17th century until Florida became a United States territory in 1821 (ending the safe haven for escaped slaves was the main reason Florida changed nationality). However, the network now generally known as the Underground Railroad was formed in the late 1700s, and it ran north to the free states and Canada, and reached its height between 1850 and 1860. One estimate suggests that by 1850, 100,000 slaves had escaped via the "Railroad".
British North America (present-day Canada), where slavery was prohibited, was a popular destination, as its long border gave many points of access. Most former slaves settled in Ontario. More than 30,000 people were said to have escaped there via the network during its 20-year peak period, although U.S. Census figures account for only 6,000. Numerous fugitives' stories are documented in the 1872 book The Underground Railroad Records by William Still, an abolitionist who then headed the Philadelphia Vigilance Committee.Provided By: https://en.wikipedia.org/wiki/Underground_Railroad