in cave of origen
There is no ruby in groudon.
No, Groudon does not evolve in Pokémon Ruby.
after you see groudon for the first time but only see it. i no this isn't very helpfull, but ask the question "How do i catch groudon in Pokemon ruby" or ask "Where and how to catch groudon in Pokemon ruby"
In emerald find out in ruby orgin cave.
YOU CANT!!!!!!!!!!!!!!!!!!! Only in Emerald and Ruby.
you can find groudon, mew, mewtoo, rayquaza, kyogre...
You can't get Kyogre in Pokemon Ruby but you can get Kyogre in Pokemon emerald and sapphire and in ruby you only get groudon and rayquaza. In sapphire you get Kyogre and rayquaza and in emerald you can get groudon, Kyogre, and Rayquaza.
I really hope you are trolling. if not, Groudon cannot be found in gold version. or silver version. Groudon was introduced in ruby and sapphire
The main two are Groudon and Rayquza.
In the mountain after defeating the team magma leader.
regis groudon rayquaza latios and latias deoxys
in origin cave where u find kyogre in sapphire