Divers were sent to investigate a dark patch beneath the surface of a Swiss lake. What seemed unclear at first quickly turned into a treasure trove. Divers plunged into Lake Neuchâtel, and deep below, they stumbled upon more than 1,000 Roman objects from a cargo dating between 20 and 50 AD. The discovery was kept quiet at first to avoid looting, but it is now giving a rare look at how goods moved... [3391 chars]