Wasteland 2: Director's Cut (EP)

Scattered around Arizona and Los Angeles are hidden caches which you can loot. Outdoorsman skill widens the search area of your party as you travel the Wastelands, and caches appear if you get close enough. Make sure you loot all the caches in Arizona before leaving since you can't come back once you leave. The game warns you of the point of no return. There is a perk to auto-reveal all the caches but requires Outdoorsman 7 and 3 perk points. Having this perk will pop this trophy once you travel the LA Wastelands for the first time. There are 11 caches in Arizona and 5 in Los Angeles.