I did what everyone would do, opened the envelope to find a note:
"Yo Pirate, Ye be taking more than 100 Million buried coins with ye today"
I thought it would be some special kinda gold that the statues are made up of. So I went to Black Sparrow and asked him to examine the statues... He said that they were made of gold and they were worth about 700,000 gc. So the note must be just lying and I immediately went to the old man to ask him what was so weird and awesome about the chest other than the statues... This is what he said "Caunt all o' yarr chests landlubber". And I did it to find that the note was weirdly and awesomely true. I unearthed treasures of a total worth of more than 100 Millions !!!
Treasure Hunters out there. Do check this island. Go to Pania's tavern to know about its exact location. And don't forget to order for some rum. I be the owner of Pania's tavern now. So ye need t' pay me first to know about the Island.

And if ye like the rum, send me some gold in-game.