This, recommended by Apsley Cherry-Garrard, was a much needed diversion from his own journal of the Antarctic Expedition.
In which we follow the author and his crew as they sail to the island of Trindade in search of the lost Treasure of Lima.
'Lost' may be the wrong word, 'Mislaid' is perhaps better.
Anyways, on the deathbed confession of a 'Piratical Finn' several expeditions were launched to the Island of Trindade (referred to loosely as 'Trinidad' in the book), of which his is one. Enough clues given by the confession tally with the description of the island and the author is persuaded to try his hand at digging for the treasure. So he rounds up a crew - via subscription (each member pays a fee for the travel/yacht, etc - to enjoy a portion of the plunder), engages a few staff, and sets out.
A real-life "Treasure Island", if you will.
Our adventures of various sorts, the perils of landing, the attacks made on us by the multitudes of hideous land-crabs and ferocious sea-birds, our difficult climb over the volcanic mountains, and finally our anything but regretful departure from one of the most uncanny and dispiriting spots on earth, are fully set out in my book, 'The Cruise of the "Falcon."'
That, describing his first expedition, the descriptive style is much the same in the second.
Link: Google Maps, Island of Trindade
I won't be giving much away if I tell you they don't find it. Nonetheless, an interesting idea and worth it if only for the rather humorous descriptions. And there's a business idea for you, chartering a yacht and leading wealthy patrons off on treasure hunts the world over...
You can read this online - Link: Project Gutenberg - The Cruise of the 'Alerte'
Curious, what a hold "Pirate Treasure" has on the collective imagination, when so few (in fact none, I'm assured) examples have ever been found. What treasure has been recovered has been from Pirate ships and Galleons sunk and on the bottom of the sea, I can find no references to pirate treasures ever being dug up on deserted shores or islands.