No matter your age or fitness, geocaching is great way to experience nature. Now, what exactly is geocaching? Geocaching is a real-world, outdoor treasure-hunting activity using GPS-enabled devices, like your smartphone or other smart device. Like a pirate seeking treasure, you will navigate to a specific set of GPS coordinates in an attempt to find a geocache — a container that comes in various shapes and sizes — hidden at a given location. There are more than 2 million official geocaches hidden around the globe.