at the top theres a work shop clim on top of it and you'll find a flag ,there you will find a starters kit .
The cannons on your ship!
He is in the cannon shack at the top right hand corner of Pirate Outpost.
it costs 20,000 doubloons
take the cannon kit and put it under the "cavity" then go to the cannon on the left of the cavity closest to you and fire it, it will shoot the cannon kit and shake the cavity making a piece of the map fall
u have to get a set with a cannon. then, you set sail and click
you go all the way to the left on the map and jump on the cannon then work your way up
Swim left from the trading area, beneath the giant stone skull. One cannon is at the far left and you can climb up from there. To fire a cannon, you need the Cannon Starter Kit (fuse) from the very top of the outpost's mast.
You need the lighting box that can be found on the roof or somewhere really high up(maybe crow's nest) then you have the cannon pointed at the skull's gold tooth and it blows it away.
You find the cannon starting kit and the TNT barrel. Push the TNT barrel underneath the gold tooth and fire the closest cannon to the left on the lowest cliff of the giant skull. Fire the cannon using the starter kit.
Take the barrel of explosives find the cannon postition the barrel under the tooth and hit it with the cannon!
Okay, near the pirate pub theres a ship with a crane. Theres a box that says something How to Start a Cannon move behind it and push it to the ground that's where the cannon is (you might have to shift the box so its next to the cannon) you click it it'll go off and then you get a piece of the map. I confusing ,if this doesn't help type in poptropicasecrets.com, scroll down to the bottom. It'll have a list of worlds click on Skullduggery. there are more simple directions.There are videos or written directions.Scroll down to find the directions. Good Luck!
You don't climb it. You have to find the cannon starting kit and explosives barrel on that island and push the TNT under the yellow tooth of the skull, fire the nearbye cannon and the map piece will be where the tooth was.