Portus Itius

Portus Itius was the harbour in the land of the Morini, in northern Gaul, from which Julius Caesar sailed for his second invasion of Britain in 54 BCE. Caesar describes it as the most convenient crossing point, about 30 Roman miles from Britain. Its location is uncertain: most scholars identify it with Boulogne, the later Roman port of Gesoriacum, while others have proposed Wissant or other sites on the coast.