Pokémon Diamond and Pearl/Solaceon Ruins

'''Just to the east of Solaceon Town are the ruins. The ruins contain the infamous .'''

In DP there is much reason to go in here besides to meet the Ruin Maniac and collect the items which is skippable then catch the 26 Unown which also increases your chances of getting a hippopotatus in the Maniac Tunnel.

In Platinum, you get HM05 in the very last room. To get there take the northeast stairs(kid who will give seals and Unown F are here) then the southwest stairs(Ruin Maniac battle and Unown R are here) then the northeast(Unkown I is here) stairs then the northwest stairs(Unown E is here) then the northwest stairs(Unown N is here) then the southwest stairs(Unown D is here) to get to the final room with the four items.

The Unowns
There are 26 types of Unown that can be caught in the main section of the ruins- each takes the form of a letter A-Z. After catching all 26 types of Unown, talk to the Digging Manic in the Maniac Tunnel near route 214. After you have caught all 26 kinds, a hole will open up at the far end of the Maniac Tunnel. The hole leads to a special room in the Solaceon Ruins where Unown-! and Unown-? are able to be caught. There is a different type of Unown to every room in the ruins. You should be able to catch every one with a quick ball first time round.

Each Unown signifies a letter in the English alphabet. Each of the hallways contains an Unown corresponding to 1 of the letters in "F-R-I-E-N-D". All the other Unown letters can be found in the dead ends found in the hallways.

Ruin Maniac
You will find him in the second hallway that's not a dead end.


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Items

 * Fire Stone(hidden)(Platinum) - On the rock in the dead-end down the first top left stairwell.
 * Repel(hidden)(DP) - Found on the rock in the dead-end down the first top left stairwell.
 * Water Stone(hidden)(Platinum) - On the rock in the dead-end down the top right, bottom left, and then bottom left stairwells.
 * Escape Rope(hidden)(DP) - On the rock in the dead-end down the top right, bottom left, and then bottom left stairwells.
 * Thunder Stone(hidden)(Platinum) -On the rock in the dead-end down the top right, bottom left, top right, top left, and then bottom right stairwells.
 * Big Mushroom(hidden)(DP) - On the rock in the dead-end down the top right, bottom left, top right, top left, and then bottom right stairwells.
 * Nugget - In the final room
 * Mind Plate - In the final room
 * Odd Incense - In the final room
 * Rare Candy(DP) - In the final room.
 * HM05 (Platinum) - In the final room.
 * Green Shard(Platinum) - Given by the man in the second room after showing HM05.
 * Rare Candy - On top ledge (can only be accessed from Maniac Tunnel after you have captured the 26 different kinds of ).