I have snowboarder friends in the French Alps at the moment, and I hope you’re not these two people.
Two Dutch snowboarders got stuck boarding the wrong way in the French Alps and ended up on a glacier. Oops. They had forgotten their mobile phones (extremely handy when skiing I found out) and stamped out SOS in big letters with their feet. Someone on the slopes saw them and they were rescued.
Don’t forget your mobile and make sure it’s charged. And bring a candy bar just in case.