En route back to Batavia, Tasman came across the Tongan archipelago on 20 January 1643. While passing the Fiji Islands Tasman's ships came close to being wrecked on the dangerous reefs of the north-eastern part of the Fiji group. He charted the eastern tip of Vanua Levu and Cikobia before making his way back into the open sea. He eventually turned north-west to New Guinea, and arrived at Batavia on 15 June 1643. For over a century after Tasman's voyages, until the era of James Cook, Tasmania and New Zealand were not visited by Europeans—mainland Australia was visited, but usually only by accident.