That means message in a bottle.
Message in a bottle thrown into Rhine by German family found in New Zealand – Eight years after throwing a bottle containing a message into the Rhine, a German family has been contacted by New Zealanders who say they found the message 18,000km away. But the finder didn’t give their address.
It almost sounds too, I dunno, implausible to be true.
“We are still totally surprised to have received feedback after all this time. And then of all the places, from New Zealand, our dream destination, to which we have unfortunately not yet been.”

