Scattered throughout the world is proof of an advanced prehistoric civilization. There exist those who desperately want to learn more about these ancient people. The series follows people who set out on an adventure to uncover the truth.
1999
1994
1998
2004
1989
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2001
1975
2014
1964
2012
2003
1996
1986
2013
2007
1982
1962
2002