Chocobo Digging is a hobby in FFXI in which you use Gysahl Greens to get chocobos to dig up potentially valuable items. The items vary by zone and rarity. All that you need in order to dig is to ride a chocobo, have Gysahl Greens in your inventory, and select the dig command from the menu options. Each time you use the dig command, one bunch of Gysahl Greens is removed from your inventory.
Description of colored circles and Dark word
Red = Requires Burrow | Grey = Requires Egg Helm | Green = Requires Bore | Dark Word = Obtainable only at night