[gallery]
unsplash:
By Dustin Scarpitti http://ift.tt/1ICvMsj
By Jeff Sheldon http://ift.tt/1prjUnE
Download / By Tim Mossholder
Download / By Ryan Schroeder
Download / By Alex Talmon
Serenity by Bergen64 on Flickr.
The Tatra mountains by Dariusz Wieclawski on Flickr.
Lightning Strike by Cat Connor on Flickr.