Cissa is a small island located off the west coast of Istria, not far from Rovinj. The island of Cissa is first mentioned by Pliny the Elder and allegedly sank during major earthquakes in the second half of the VIII century.
Rovinj's local historiography advocates the thesis that ant. Cissa was on an islet south of the city, which sank in an earthquake in late antiquity, and is the forerunner of later (and today's) Rovinj. A marble inscription found near Cape Barbariga in 1778 reveals that there was a plant on Cissa for the production of a very luxurious purple cloth, as well as a procurator and council of Cisan purple.
№578 in locations of Croatia