This story takes place in
Koh Adang, next to Koh Lipe (one of the nicest islands I've seen in my life).
It's located in the Adang archipelago of the Andaman sea (close to the Malaysia-Thailand border), and its name means "Paper Island" in the local Chao Leh language.
It's a small paradise on earth where you can really appreciate your luck to be alive.
So if you've never been there, don't hesitate any longer... come and admire its magnificent turquoise waters and its fine sand by yourself!
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The crazy adventures of Captain Usopp
Third volume - The pirate's hidden treasure
Captain's logbook
Sunday, January 1st, 2017
Sorry...
I'm still writing the story!
But if you already want to try to find this cache, here are all the informations you need:
First step
To start, you'll have to find a way to reach the Ranger Station in Koh Adang.
But don't worry, that's not so complicated... just hire a taxi boat in Koh Lipe and say that you want to go there (more informations in the Waypoints section).
Once you're at the Ranger Station, facing the mountain, just follow the path going on your left to reach the Pirate Waterfall Traihead.
Then take the clear path going through the jungle...
(You can see it on the Geocaching Map or you can download the GPX file here)
You'll have to walk for more than half an hour before you reach the Tree Hole waypoint.
Actually, that's a huge tree with hanging lianas and a hole at an approximate height of 5 meters.
And you know what?
You'll have to climb this tree to retrieve a small box (bison tube) which is inside the hole. 
Click on the above image to view it in full size
So be very careful, use the lianas to ensure your ascent and when you reach the hole, please, don't pull the box out from it.
The box is attached with a carabiner, so just unhook it with care.
Good luck!
Second step
Now, with the bison tube in your possession, just open it.
Inside you'll surely find some clues to solve the following puzzle:
Click on the above image to view it in full size
This piece of paper, I found it when I was trying to follow Captain Sabo to his treasure's hiding spot.
It felt from his pocket just before I had to run away from him and his terrible army of nutcrackers.
Not because I was affraid of course, but rather because I'm allergic to squirrel hairs.
And as I hate sneezing, I will never go back there.
During my escape, I could barely see the pirate retrieving a key and small pieces of paper from the box, but beside that, I have nothing more to tell you...
I hope you'll be successfull where I failed!
GEOCHECKER
Click on the banner above to check your solution
Third and last step
Once you've found the GPS coordinates of the
final cache, you'll be on your own.
Of course, the treasure is located not far from the waterfall, so just follow the path and don't get lost in the jungle!
Bring the small box (bison tube) and all its content with you and don't forget to read the hints.
At the end of your adventure, please, put back the box where you found it...
Sorry, you'll have to climb again!
Now it only remains for me to tell you...
Good luck geocachers!
PS : It's always pleasant to see a picture (or more) in the logs...