My Antarctica postcard got a mystery stamp on it! I weirdly couldn't find anything about this stamp by googling. It says
All Paths Lead NORTH 53
South Pole Antarctica
2012 INTERNATIONAL LOCAL POST
POSTAGE PAID TO NEAREST MAIL RECEPTACLE
What is it? Why do I have it? Is it a souvenir or necessary? Maybe the postal worker really liked my postcard, which is a map of the oceans around Antarctica.
Antarctica is my favorite philatelic subject.