Lapras is not in the Ruins of Alph, it can be found in the Union Cave on Fridays only. It'll be surfing on a body of water.
There are more areas in the union cave that you could not get to before. I know you need to have surf to get to the other two areas and you might need strength as well but I'm not certain.
you can get both Pokemon pearl and diamond Pokemon on the game if you go underground
in union cave you need to go down the ladder by the scientist, surf in the water and look in that cave till you find a boulder. move it and exit the cave, hop down the ledge and into the other cave. there you have it!
solve the kabuto puzzle, then have an escape rope, and use it in front of the label that says ESCAPE in unown. here are the others. flash-ARADACTLE puzzle have ho-oh for the third, and a water stone for the 4th. do these in front of the walls.
You can get natu at the ruins of alph in heart gold and soul silver
Lapras is not in the Ruins of Alph, it can be found in the Union Cave on Fridays only. It'll be surfing on a body of water.
tap the tiles
beside the town that has the sprout tower in it
learn surf
you find him in the ruins of alph by weeds and you can find smeargle on there same thing on Pokemon heart gold (natu evolves at level 25)(smeargle no evolvetion)
you are a hobo
it turns into arceus NO IT DOESNT
You can get it by smashing rocks using Rock Smash in the Ruins of Alph.
Once you have Arceus, go to the Ruins Of Alph and you'll be able to go to Shinto Ruins.
you have to have the toys-r-us event arceus and go to the archeoligist in the ruins of alph. he will take you in the rooms and you will transport to the ruins of sinjoh.
First go to the Ruins of Alph then go to the first puzzle room then try to complete it if you do then you will fall to the big room then the Unown will appear.