Pit Blocks or Crumble Blocks are a type of block that can be revealed by Morph Ball Bombs and Power Bombs. They can only be removed by standing or rolling over them, and function as one-way paths, temporary bridges, and such. Samus Aran is the only entity in the games that can trigger Pit Blocks. This is shown by the SA-X in Fusion, Space Pirates in Zero Mission, and Sovas in Super Metroid, all of which are able to walk over Pit Blocks without activating them. Samus falls through a Pit Block in the Super Metroid manga story called Trap. [1] It is referred to as a Disintegration Block.