when geocachers find the containers they are searching for, they sign and date the log book hidden inside and take the treasure - after taking the treasure they replace it with something else of value so the next person can go through the same process.

eco trekking uses the same concept as geocaching, except it primarily takes place in the wilderness - the settings might include hiking trails or other outdoor recreational areas. the cache boxes individuals find on eco treks usually have information about the trails and wildlife instead of treasures - ways in which an individual can help the local ecological environment might also be available in the cache box.