Letterboxing is a popular outdoor
activity similar to a treasure
hunt. People letterbox around
the world, and there are about
90,000 letterboxes throughout
North America. In letterboxing,
someone hides letterboxes and
then posts clues for finding the
letterboxes. Other people use
the clues and a map to find
the letterboxes.
Letterboxing is a popular outdoor
activity similar to a treasure
hunt. People letterbox around
the world, and there are about
90,000 letterboxes throughout
North America. In letterboxing,
someone hides letterboxes and
then posts clues for finding the
letterboxes. Other people use
the clues and a map to find
the letterboxes.