It is kind of freaky... run through a lower ruin, and you'll teleport to another... depending on the direction you press, you will warp to a different ruin.
It can be found in the Solaceon Ruins.
you have to go to the socaleon ruins or whatever
You get the amulet coin by bringing a "cute" Pokemon into amity square andgoing to the old ruins. then you go inside the left one and take 2 steps forward then one to the left. Don't move and press A. you should get it.
You find it in the solaceon ruins after you catch all the unown.
first get out a there go to hertarome then veilstone
If you talk to your pokemon in amity square it may give you an item or there is a guy in the ruins of amity square that you talk to he will give you either some rare berries or a prop
well you can get in amity square in one of the ruins take 2 steps left dont move press a and vuala. hope this helps.
The Solaceon Ruins.
Go into the ruins you come a different one you went into
Arceus
I think you have to find a special pokemon
lol there are no eterna ruins that was just in the anime.
in the solaceon ruins.
you get it at the solaceon ruins at the end of it
you go in from the veilstone way
Unown. In the solaceon ruins
You can find the M form of Unown in the Solaceon Ruins of Pokemon Platinum. This form of Unown appears in the dead-end rooms of the Ruins.