The highest possibility to get resources is in the mountains.
But almost any place has some resources. Click on the area and you will see the list of resources that can be mined there and the chance to dig. If nothing is shown than you can't mine there.
If the list was showin gresources but when you arrived to the place Digging tab is empty - this means other players dug out all the resources already. Byt do not get upset - resources will replentish in 24-48 hours
