An ice fishing auger is an extremely valuable tool for any ice fishing angler. An ice fishing auger is a spiral shaped device used for drilling through thick ice and making a nice tidy ice hole to fish through. It is usually gas powered but you can get some that are human powered.
There are other tools that you can use to cut through ice like a saw or dynamite but an ice fishing auger is the easiest and safest to use.
WARNING: DO NOT USE DYNAMITE TO CUT A HOLE IN THE ICE.
It will scare away the fishes and possibly scare your head off of your body.
Gas powered ice fishing augers are a fairly heavy piece of equipment so if you are going to be walking a long way to your ice fishing destination then I suggest that you pack something a bit lighter, like a ice saw or smaller human powered auger, or bring someone else to carry it.