This feature documentary was shot last summer.

It's beautiful, astounding, inspiring and features some French men who are quite, quite mad.

Best viewed in fullscreen, here's the trailer for a 40 minute documentary entitled 'I Believe I can Fly' by Sébastien Montaz-Rosset.

"I have been filming the Skyliners on an incredible exploration into the world of free flight. Tancrède, Julien, Seb and Antoine are pioneers in ‘highlining’ - a vertiginous combination of climbing, slackline and tightrope walking.

We travelled from our home in Chamonix to our training ground in the Verdon gorge, testing the limits for our ultimate goal. We rigged highlines on the skyscrapers of Paris, and finally came to the spectacular cliffs and fjords of Norway."

Not really much else to say that the trailer won't, apart from that the film will be available to watch in full for free for for a limited period on Seb's adventure video blog tomorrow.

Director/Editor Sébastien Montaz-Rosset.
Sound design Michael Denny.