You'll need a map.
How do I get a map?
Now, where's the most logical place for a treasure to be hidden?
It's someplace maze-like...
And in the middle of nowhere.
Someplace like the woods.
You can go to the woods by traveling to the place labeled "Fork" above the "Lookout" on the general map of Melee Island.
Now, use your map.
You'll need to look at it.
Go the directions indicated on the map once you have entered the woods. Ignore the numbers. Left, 2, 3 means go left once, NOT three times.
Once you reach the final screen where the map leads you, go to the right to find the X.
Ack! I'm lost. Show me a map of the woods.
Now you need to dig it up.
How do I dig up the treasure?