Rocky Ridges (Underground) has 13 mapped points across 4 locations, 5 collectibles, 4 items, so you can scan the area faster before heading back into the game.
Behind a grate deep in the cave. Can only be accessed after upgrading Cut.
Inside a red Poké Ball beside flowing water deep inside the cave.
Next to a smelting furnace.
Inside a red Poké Ball next to a crate in the lava-filled area.
In a room filled with large crystals.
Inside a red Poké Ball in a room filled with large crystals.
Railway Track x30
Step Stool
Pecha Seeds