Alberto's effects?
 

I've been told they are in the Wildwoods, but I've searched all over that section and can't find it. Any help would be appreciated and a screenshot would be great.

Did you try the hill by the gypsy?

If they are on Wildwoods (on Tortuga), youll have to find them there, not in the town area of Tortuga.

In the middle of Wildwoods is a small stone arch you can walk through, there is a dig spot near one side of that arch.

I cannot remember any other specifically, but I generally walk around the edges of a 'room' to find dig spots, as 'most' are not in the middle of the areas.