"Maroonie's Secret Stash" is the actual name of this particular location, and although discovering it does not affect the storyline in any way, it is important for the Gadabout achievement. The location appears on the map as a small circular blank spot until discovered.
The stash is in a little room on the top of a windmill-like building, located at the north-western edge of the island. The building is the second one on the left after the first New-U Station (not counting the Fast Travel Station at the start), right before the stairs which lead to AM-FM Isle.
To reach the top, a player has to use the railing and the circular vent-like object at the building's northern side, which faces the stairs leading downwards. After jumping on the roof, the room can be easily accessed at the other side of the building from the balcony before it.
The room contains five small lock boxes, ten small safes, and also two bigger safes which can be opened either by shooting or hitting their locks.
- Any attempt to drop down onto the structure from Magnys Lighthouse above will instead result in the character's immediate death. Although the building can be lined up as a theoretically viable target zone, there is an invisible 'kill surface' not far below the summit.