Saddle up with a Colorado rancher risking it all to preserve a magnificent beast of the American plains: wild bison http://on.natgeo.com/2eZKDZq

Saddle up with a Colorado rancher risking it all to preserve a magnificent beast of the American plains: wild bison http://on.natgeo.com/2eZKDZq 

https://twitter.com/NatGeoTravel/status/891810688246706177