Ancient Mega-Fort
- Episode aired Dec 4, 2009
- TV-PG
- 44m
![Ancient Discoveries (2003)](https://m.media-amazon.com/images/M/MV5BMjAzOTM1ODI2N15BMl5BanBnXkFtZTcwNDE3OTQ1MQ@@._V1_QL75_UY281_CR16,0,190,281_.jpg)
Holding off invasion and protecting its people, ancient civilizations came up with creative, efficient, and effective means of self-protection and defense. Go behind some of history's most i... Read allHolding off invasion and protecting its people, ancient civilizations came up with creative, efficient, and effective means of self-protection and defense. Go behind some of history's most impregnable walls.Holding off invasion and protecting its people, ancient civilizations came up with creative, efficient, and effective means of self-protection and defense. Go behind some of history's most impregnable walls.