The early Picts are associated with piracy and raiding along the coasts of Roman Britain. Even in the Late Middle Ages, the line between traders and pirates was unclear, so that Pictish pirates were probably merchants on other occasions. It is generally assumed that trade collapsed with the Roman Empire, but this is to overstate the case. There is only limited evidence of long-distance trade with Pictland, but tableware and storage vessels from Gaul, probably transported up the Irish Sea, have been found. This trade may have been controlled from Dunadd in Dál Riata, where such goods appear to have been common. While long-distance travel was unusual in Pictish times, it was far from unknown as stories of missionaries, travelling clerics and exiles show.