Red Squirrel
No Lifer
Just throw it in the trunk of your car (let it freeze overnight first) then drop it off a bridge into the river or something. Make sure there's no oncoming snowmobilers on the river or they're going to get hit with a nasty surprise. 
It will get packed by snow over time and in spring it will just fall in as the ice melts.
It will get packed by snow over time and in spring it will just fall in as the ice melts.