Black Rock

Black Rocks are obstacles in Mario & Luigi: Superstar Saga. They are found throughout the Beanbean Kingdom, serving as roadblocks for Mario and Luigi. They can be destroyed only by Ultra Hammers, which the Hammerhead Bros. forge for Mario and Luigi at their home in the Beanbean Castle outskirts. Black Rocks most notably obstruct the Surfing Spots on the shoreline of Oho Ocean, which are necessary to cross the ocean and reach Joke’s End using Luigi as a surfboard, meaning that the Ultra Hammers must be obtained. Several Black Rocks obstruct the entrance to Joke’s End itself as well.

In Mario & Luigi: Superstar Saga + Bowser's Minions, they appear as light brown-colored rocks instead.