Iran, home to the oldest civilizations on Earth, is also brimming with remarkable geologic formations and ancient forests that many know little about http://on.natgeo.com/2k4KDHB

Iran, home to the oldest civilizations on Earth, is also brimming with remarkable geologic formations and ancient forests that many know little about http://on.natgeo.com/2k4KDHB 

https://twitter.com/NatGeoTravel/status/942378883206275072