Using 54 balloons filled with helium, the 38-year old American set off from Gap, in southern France and took to the air on his unusual, yet daring, adventure. Reaching altitudes in excess of 4500 meters (15,000ft), it took Trappe 12 hours to complete the crossing, which ended when he landed in the Italian village of Andezeno.
Trappe set off on his journey before dawn and actually watched the sun come up over the mountains. Before that happened however, he drifted along in the dark, nervously hoping that he wouldn't have to make an emergency landing in the mountains below – something that he thought would probably result in his own death.
That didn't happen fortunately, and he successfully completed the crossing and delivered the video below. It shows him floating along above the clouds, calm as can be. Amazing.