Lanzmann hid it in a bag with a tiny hole for the lens, and had one of his cameramen point it at an unsuspecting interview subject.

NEWYORKER: Witness

The system also pumps in more air every 30 seconds for three minutes, just in case debris or a branch punctures a hole in the bag.

BBC: The ski gear that could save lives

By the time he reached the final hole Edwards knew victory was in the bag and he capped his display with another birdie after a perfect second shot over the water.

BBC: Joel Edwards is in uncharted territory