Stone Block from Paper Mario
Stone Blocks are a type of block in both Paper Mario and Paper Mario: The Thousand-Year Door. In Paper Mario, they can only be broken with the Super Hammer or the Ultra Hammer, but in Paper Mario: The Thousand-Year Door they can be broken only with the Ultra Hammer, making them unbreakable until after Chapter Six. They are unbreakable with any other hammer. Larger Stone Blocks also appear in Thouand-Year Door. They can be destroyed by a spin attack from the Ultra Hammer.