10 Most Epic Underground Cities
Channel: Eskify
Date: 2015-08-03

Believe it or not, there are a number of underground cities and towns across the globe. Some were built purposefully to be underground yet many were purely accidental, from a network of tunnels run by a drug lord named Bruce Lee, to the canal settlements of Amsterdam.

Music credits: "Rites"
by Kevin MacLeod (incompetech.com) 
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/