After you free misprit, azelf and uxie from team galactic head quarters if that is the painting your talking about
you have to beat team galactic at their HQ
in mt cornet in mt cornet
if its pearl go through mt cornet ,au revoir
To get to the top of Mt. Cornet you have to beat the team Galactic Eterna City and Veilstone buildings(otherwise there will be a cave painting blocking the path in Mt. Cornet) and enter Mt. Cornet from the Oreburg-Hearthrome City entrance(This is the ONLY entrance to the summit of Mt. Cornet. The other entrance takes you on the path to Snowpoint City). You need the HMs Rock Climb, Rock Smash, Strength, and Surf (Defog won't work in the cave). Also, when you get to the crumbled cave painting, Looker will give you a Black Flute, which lowers the chance of you running into wild pokemon.
You need to of released the lakePokemon (Azelf, Mesphrit, and Uxie). The you can go there and the cave painting will be demolished.
The path is the exact same as Diamond.
you cant
its on the top of mt cornet.
you find Cyrus in celestic town. you find Cyrus in celestic town
theres a passageway through mt cornet
You can find a Chimecho in Mt. Cornet!!! You can find a Chimecho in Mt. Cornet
No, it is mt chimney