Need a bit of inspiration before you submit? Check out 15 mesmerizing photos from last year's contest http://on.natgeo.com/2pve8Xi

Need a bit of inspiration before you submit? Check out 15 mesmerizing photos from last year's contest http://on.natgeo.com/2pve8Xi 

https://twitter.com/NatGeoTravel/status/856810042452045825