You will need HM: Cutgo to cycling roadthen use cutuse bike to drive down all the waythen underneath cycling road theres a secret entranceHAVE FUN WITH TM: EARTHQUAKEPS:note: Switching gears will help you with this
There is one behind the pokemon center (hospital) in the resort area
Wear is in pokemon platinum earthquake
In a secret room in wayward cave
Wayward cave under the cycling road. .
Lol you guyes are so funny ok heres what you do you go to veilstone city go to the gaming shop but you need a coin case first ok to get that you need to go out and down than left.you will then see to houses pick the 1st or 2nd one I forgot which one and in there is a clown guy talk to him and answer his question with right or left depends on the game than you will get the coin case now go back to the gaming centre and by money now go out and beside the building is a house go in it and the last option is earthquake=)
Well I think you go to the secret path under the cycling road in this secret room
Heres another tip. The muddy water puddles inside the cave seem to block you. However by using the different gears and speed of the bike you have you will be able to get past all of them easily. Trial and Error shall help
It's in the very very back of wayward cave. You go to the very back and will see another little cave and you go in it and there it is
End of wayward cave(has gible in it).catch a gible then teach it earthquake at lvl 27 or 26
There is a secret tunnel under Cycling Road. In Diamond its blocked by boulders so you need Strength. But in Platinum, they removed those boulders so you can go down and get Earthquake after beating Enterna's Gym. You can also capture a Gible down this cave.
I think it is in the hidden entrance in wayard cave.It is the last item.
I don't know how to get earthquake in wayward cave in pokemon platinum