This tile, when placed on the floor of your base in the Sinnoh Underground in Diamond, Pear & Platinum, will cause a block to land on the user that needs to be broken by tapping it on the DS' touch screen
A Tool that makes blocking boulders. Break the boulders to get free.
Episode 963 The Promise Between Ash and Pikachu
Episode 964 It is Time for Litten to Set Off!!