There are many dangers at the poles and in the icy mountians of the world, but few dangers are harder to survive then an attack from an Ice Ghoul, a shadow-spirit whose very touch can be deadly.
What about a 'criminal' society with distinct laws - for stealing, the larger the value of something stolen, the less punishment the courageous thief recieves (but must return it of course). For this pirates(?) caught petty thieves deserve to be punished harshly. If you take, you better take a lot.