http://www.redbull.com/uk/en/adventure/stories/1331830150484/aaron-durogati-planet-earth-ii-paraglider-red-bull

The next day, it was still really foggy but by this point we had
run out of food and we hadn’t eaten for 12 hours and were damp. We didn’t even
have a lighter to make water from the snow. We were so tired and wet that it
seemed more dangerous to wait longer without food and water than to try to take
off, so that’s what we did.

Taking off was really scary – for around one minute we couldn’t see anything. We
were completely in the clouds, flying blind. Just imagine driving a car at
100kph in the fog on a country road… It’s not that cool! It was a great relief
when we reached the valley.