Saturn Valley
Cave Full of Barf
Mini Barf ( Battle )
Grapefruit Falls
Exiting the caves there will be a man selling a few food items and a Magic Butterfly.
Make your way up the coast line. Most of the enemies are not too difficult but be sure to watch out for any of the Plain Crocodiles.
Towards the top of the map you'll see another tunnel entrance. That will lead you towards Saturn Valley.