Have you heard about these two styles of public treasure hunts? Treasure Hunting Enthusiasts have hidden both a letterbox and a geocache on the library premises.
Clues can be found at
Letterboxing started in 1854 in Dartmoor, England.
Clues are given to find a hidden container.
This style uses stamping.
You sign the logbook with your signature stamp
and use the stamp in the letterbox to
mark your personal logbook.
By comparison, Geocaching started 22
years ago in Portland, Oregon.
GPS coordinates are used to locate the hidden container. Sometimes the caches include small prizes.
Geocaching honor code requires that if you
take a trinket, you must leave some other trinket
as a prize for the next treasure hunter.