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Topic: These 5 Ancient Cities Were Built Underground on Purpose (Read 13 times) previous topic - next topic

These 5 Ancient Cities Were Built Underground on Purpose

These 5 Ancient Cities Were Built Underground on Purpose

[html]Learn why some of the most prominent ancient cities were built underground and which ones you can still see today.[/html]

Source: These 5 Ancient Cities Were Built Underground on Purpose (http://ht**://www.discovermagazine.c**/planet-earth/these-5-ancient-cities-were-built-underground-on-purpose)