If there are deer or elk in the region, it is reasonable to believe that there will be "trail cameras" in the region. Many of them are camouflaged to look exactly like tree bark. In the event that you are considering burying treasure in that plot of land, it would behoove you to carefully inspect:

1. the fences to see where people have been cutting them or splicing them to allow for easier access.

2. All the trees within eyesight of your proposed Pirate Loot site for camo'd trail cameras. Install some of your own to ensure no one is a frequent flier in your turf. Ginseng poachers are a problem in wooded lands in the Eastern part of the US. With legal weed (in many states), growing pot on someone else's land has died down a lot (the owner of the land ends up in legal trouble).

In the end, it might be easier to dig up part of your basement to bury it there. And to obtain a large gun safe to appear to be where valuables are stored. If someone wonders why the cement floor has cut/repair marks, just shudder and mumble plumbing work on the main drain line due to tree roots.