Go to six island and go east to find water use surf and go north continue north to pattern bush go through pattern bush then use surf again continue north until you reach altering cave.
you cant
You go to the secret cave in joto and destroy the 9 gold diamonds
You cant find Uxie now because he turned into a Bidoof and ran away
Evolve Snorunt which can be found it shoal cave in the ice bit
u cant find palkia, but u can get dialga at spear pillar
you have to get the hm waterfall which is found within the cave
I believe you mean gible and if so, it is in Wayward cave. Wayward cave is under cyclying road by cutting the trees at the end of cycling road. and very IMPORTANT: youll see a cave entrance to wayward cave. DO NOT GO IN THERE! instead go under the bridge where you cant see anything under it and walk into the wall that you cant see. If you cant find the cave entrance then try different places under the bridge. sorry if I am complicating you.
you cant
under the path that you are forced to bike on. If your trying to catch gibble he is in a secret part you cant see. Just bump around under the cave you'll find it
beat the elite 4 then go to metiore cave and go up the waterfall then look around and you'll find him
you cant
you cant, you use dive next to the sub and you will find them inside the cave