The Hiking Club Ramblers had its first geocaching trip. Geocaching is a real-world treasure hunt that’s happening right now, all around you. There are 2,478,102 active geocaches and over 6 million geocachers worldwide. While geocaching you hunt for hidden caches that can vary greatly in size and appearance. You may find anything from a large, clear plastic container or a film canister or a fake rock with a secret compartment.