Moon Rock

Moon Rocks are lustrous, gray, cubic objects found in Super Mario Odyssey. One of them is present in all fourteen of the kingdoms visited during the main story, but they have no function until after Bowser is defeated in the Moon Kingdom. After that, the Moon Rocks in each kingdom glow, and Mario can activate them by Ground Pounding on them. Upon activating a kingdom's Moon Rock, it will fly into the sky, and more Power Moons will become available in that kingdom. Toadette also gives Mario a Power Moon for activating all of the Moon Rocks.

Similarly textured rocks can be found in the Moon Kingdom, most prominently during the escape sequence at the end of the game.