Geocaching is like a global treasure hunt where people, called geocachers, search for cleverly hidden containers known as geocaches.
A geocacher hides a geocache and challenges others to find it using a smartphone app or GPS device
Geocaches can contain a logbook for finders to sign or small trinkets for trade
Geocaches are put back where they are found for the next geocacher
The word geocaching was first coined in 2000 - it combines ‘‘geo’’ for geography and ‘‘caching’’ for the process of storing or hiding materials
Non-geocachers are known as muggles