What do I do after magma rock.?

After Magma Rock you have get back on your boat and sail along the coast of Gondowan until you find a small little beach. Go on the island and enter the town of Loho. Go all the way east until you find a cannon. Load the cannon with magma balls[which you find in magma rock]. So it will blow up the ice wall. Then the villagers will talk and they will ask you if you want the cannon on your ship say yes. So they will carry the cannon to your ship and attach it.the go past where the ice was and you are able to find 2 golem cores [sunshine will make them in to weapons or armor] go up the stairs and you are able to find the Jupiter Djinn Lull. Then go north of kalt island and there is a foggy area. Enter it then go through every path eventually you will find a big thing of ice they talk then steer the ship behinde the two small rocks and load up the cannon and it will blast the block of ice away. Then there will be a short little scene and you will end up in a really snowy place. Land your boat and go north you will eventually end up in the town of Prox.