Eric and Milo Porter shot in their backyard for Nat Geo.
http://adventureblog.nationalgeographic.com/2012/08/16/adventure-begins-at-home-especially-when-your-dad-is-a-pro-mountain-biker/
http://adventureblog.nationalgeographic.com/2012/08/16/adventure-begins-at-home-especially-when-your-dad-is-a-pro-mountain-biker/