Found inside The Scuttle Pit – public dungeon. Entrance to this cave is hidden inside a small hole. You can approach it from the south. As you enter the second largest cave room, turn left. There, in a corner, between a rock and plant’s root you can spot the familiar shine.
Find and enter The Scuttle Pit – public dungeon.
Cave entrance map location.
As you go through the small passage between two largest cave rooms, you can spot the collectible.
Sand Kingdom Moons - Super Mario Odyssey Power Moons