Author Brian Foerster explores the possibility that a technologically advanced civilization existed in the areas of Machu Picchu, Ollantaytambo and PumaPunku in Peru, long before the Inca Empire.
2006
1998
1980
1992
1995
2025
2005
1985
1996
1959
1971
2011
2020
2004
2009
1967
2012
2022