San Juan

San Juan, located on the southern coast of Cuba, was one of several smuggler dens in the Caribbean. It was found and robbed of its supplies by the pirate Edward Kenway during the early 18th century.

Relatively small, San Juan primarily consisted of two caverns, one of which opened up to a cliff overlooking the sea. Used to store various wares and cargo, they could be accessed through a series of underwater tunnels, populated by moray eels and sea urchins.

Reference

 * Assassin's Creed IV: Black Flag