The question is rhetorical. The publisher titled the video "crazy people" then states in the infobox:
"Vintage footage of an icebreaking boat in Finland with some very brave people coming out to see it."
Nevertheless, it's very cool footage (no pun intended).
Under a minute.
You ever heard or seen the running of the bulls all over Spain during the bullfight season? Like anything else we are not familiar... there is a science to it... an inside knowledge we don't grasp. To a foreigner is suicide but to a local that been doing it since age 12, it is like riding a bike. They know what they are doing... they had seen it before.