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Sunken Treasures is the second Anno 1800 DLC that was released on July 30, 2019. It is the first DLC of the Season Pass. It adds a new European session: Cape Trelawney which contains a big continental island, a new neutral trader Old Nate and comes with a new storyline, separate from the campaign. The DLC also contains new quests, items and new features such as crafting and diving bell ship.