Find the submarine Team Magma stole and defeat themand awaken Groudon
go to dewford and go in the cave the man in there has it
In Pokemon emerald/Ruby/Sapphire,go to Dewford Town and go to the Cave and ask the man that istanding there and he'll give it to you.
To get past the man to enter the Cave of Origin you need to reach a certain point in the story. You will not miss the Cave of Origin as the story directly tells you go there once you've reached that point.
i hate pokemon!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
If you're referring to what the guy infront of Cerulean cave is saying, the Great Achievement is bringing the Sapphire and Ruby to the man in the research center on One Island.
go to dewford and go in the cave the man in there has it
In Pokemon emerald/Ruby/Sapphire,go to Dewford Town and go to the Cave and ask the man that istanding there and he'll give it to you.
Go to seafloor cavern first. If you're playing with an emulator, there should be maps and stuff that show you where to. Used Youtube, super effective XD
you cant catch a man in Pokemon ruby
Anger the ancient Pokemon and cause craziness to happen to the weather.
After you Defeat Team Aqua or Magma g o to stoopopolis and steven and the gym leader there will escort u into the cave (note not go in)
I believe same as Ruby and Sapphire. You cannot reach the cave of origin after the Groundon+Kyogre+Rayquaza+Team Aqua/Magma drama thing because it is blocked by an old man. I tried but i didnt beat the elite four when i did so maybe after the elite four but i doubt it. Steven leads you to the cave of origin so if he hasn't you shoulnt have to go there. The C of O is in the back of Sootopolis
To go To The Cave Of Origin You Need To Get The Red Orb You Can Get It In Mt Pyre Once You Go Inside on The First Floor Turn Right You'll Go Into a long Passage Way Go OutsideGo Straight Until You Meet Archie/Maxie Then He Suddenly Leaves For Slateport Once He Does The Man/Woman Will Give You The Red Orb For Safekeeping.
To get past the man to enter the Cave of Origin you need to reach a certain point in the story. You will not miss the Cave of Origin as the story directly tells you go there once you've reached that point.
Kyogre is found both at the Cave of Origin and at Marine Cave, Groudon is found in Terra Cave both will appear after talking to the man at the weather institute on the top floor.
After you get the ruby and Sapphire and give them to Celio, go to Cerulean City and Go to the cave where the man was standing. Go through the cave and there it is, a level 70 Mewtwo.yes he is in cerulean cave and you can only get in there by beating the elite four
Behind the Old Man's Doorjust a cave with no Pokemon.It is said that if one of your Pokemon dies it's soul lies there.There is only one time that you can enter that cave.It is when there's that big fight between kyogre and groudon. This cave is called," The Cave Of Origin".