This adventure involves using a GPS device or a smartphone to navigate to specific coordinates and locate hidden containers called "geocaches" or "caches." These typically small, waterproof containers that contain a logbook where the geocacher can sign their name and date of visit as proof of finding the cache. Some caches also contain small trinkets or toys that can be exchanged or swapped. Geocaching can be done by anyone, a great way to explore and get outdoors.