Well,not much of anything would be occured later....
aegis cave all floors except for after you pass registeel chamber
Each level of Aegis Cave needs a certain set of unown stones to be in your treasure bag. For example, the Ice level needs ICE, then ROCK, and finally STEEL. All other stones are technically useless, but explode against enemies when thrown, doing 60 damage without reduction.
basically all you do is recruit new members
Nothing really,you just get the satisfaction of getting all 28 Unown.
Nothing, sadly.
You Just Get A Gold Box Where It Shows You What Bosses You've Beat
nothing happens you just have them
After collecting all 26 Unown, talk to the scientist and he will let you print out your Unown shapes.
The tunnel on top the ruins is accessible.The tunnel is where you catch the ? and ! Unown.
If you get all the Pokemon and 99 of all items you can restart the game and be Jarachi as a starter.
I think you are supposed to go to a dungeon where you find Lugia. It has many floors. At least that's what I heard on You-Tube...
If you are refering to the Aegis Cave mystery, then there is a process you must go through in order to progress to the deeper levels. You will notice that when you defeat Unown in this dungeon, some of them drop a perculiar stone which is marked with their symbol. These symbols can be translated to English letters (and the punctuation marks of ! and ?) and play an important part in the mystery of the cave. You must gather the apporpriate Unown stones which spell out the section of the cave you are in in order to move forward. If you are in the first section of Aegis Cave, then you will need to gather the Unown stones which translate to the letters 'I' 'C' and 'E'. With these in your inventory, place a hand on the notification in the base level and it will clear the path to the next chamber. Proceding to the next chamber will require you to gather the stones marked 'R' 'O' 'C' and 'K'. And lastly, gather the stones marked with 'S' 'T' 'E' 'E' and 'L' to unlock the last chamber and solve the mystery. Once you have navigated through all of the sections of the cave, you can progress in the story. However, if you are defeated in the dungeon or visit Aegis Cave again, you will need to complete the same process as before, and gather all of the Unown stones anew.