The Pirate's Alcove

Few know of the hidden dock inside a naturally formed cave lying in the westerly seas, for nary a soul dare to venture close to the wave-beaten precipice that houses it. This place was once the stronghold of a renowned pirate and his hardy crew. But there is no one here anymore, for the captain murdered all of his subordinates. Ten years have passed since anyone has stepped foot in this cavern, but the place is still lit, and a pirate ship can also be seen. Is this the projection of the memories of the slain pirates? Or, is this the memories of the captain, who has since disappeared?