Yeah I kinda figured also I know of the 5k behind the shack also if you go there besides on scorching hot days you get more just varies from a few to the most I got was 1500 I believe also there is the spot right behind the wood next to the vending machine you can get items, sometimes money and a weapon same with a altar if you keep going right to the water and down and right in the middle behind it will be a weapon for sure and also there is a hidden path near the old shack just keep going down while going to the water you'll find a hidden chest with a plant