This idea came to me when reading Tesha's Sea Trade idea
, so figured I would share it. I occasionally dig when I visit islands or new places, and while I mostly don't find anything, sometimes I do. I would be really interesting if there were hidden chests or supply caches that were generated randomly about the islands, in both wilderness and non-wilderness locations. These could be dug up using a shovel, and working in a similar nature as the Globes of Shifting Contents, would potentially contain valuable items or regular items.
There could be different types of chests or caches, which would not be apparent until they were dug up and opened. Some could be empty, the contents having rotted over time. Others could be trapped, simply a decoy to lead a would be thief to their demise. Then there could be those that are the real deal and hold either supplies or valuable treasures.
I think it would do a lot for the exploration aspect as well as encouragement for Seafaring in general.