From strange native americans that built the first big metropolis before Philadelphia to the home of the minotaur to the ancient island of Crete, these are 7 Civilizations that Mysteriously Disappeared.
[youtube https://www.youtube.com/watch?v=xjiYD4RuXSY]
and check this out. THIS WEBCAST IS UNCENSORED.
[youtube https://www.youtube.com/watch?v=QfftLkIYAZY?list=PL7IpKC-AWts6dRaDvUTy4EnL6PZzWNSLH]