Volcanic craters, high exposure, weird formations—these hikes offer some of the wildest natural environments in the world http://on.natgeo.com/2kOPhZL

Volcanic craters, high exposure, weird formations—these hikes offer some of the wildest natural environments in the world http://on.natgeo.com/2kOPhZL 

https://twitter.com/NatGeoTravel/status/943315049166368768