There are a number of items that are found here including all the evolution stones, shards that are used to trade for evolution stones, the different plates used for Arceus and various items such as Revives and Hard Stones To make things worse, there a good number of rocks that are just there to take up space that can cause a cave in if you keep hitting them However there is a limit on how much stress you can induce on the wall through this before the wall collapses itself. It gives you a Pick Axe and a Hammer to use to try and break through the rocks in order to find 2 to 4 items. After locating them, this is controlled purely with the touch screen.
The main thing that you do in the Sinnoh Underground is Excavating in the walls for various items. The Sinnoh Underground is also vital if you wish to get the Pokémon, Spiritomb Just go up to it and you will activate it To activate the many events including obstacles and Fossil Hunting, all you have to do is follow the shines on the Map on the Top Screen and when you're close to one, just press the Touch Screen and if there are any by you then you will see a Shining Diamond. Black: Victini & ReshiramWhite: Victini & Zekrom.
Pokémon Ranger & The Temple of the Sea!.Mystery Dungeon - Explorers of Time & Darkness.Mystery Dungeon: Blazing, Stormy & Light Adventure Squad.Pokémon Battle TrozeiPokémon Link: Battle.