More geographically correct were Icelandic texts from about the same time, which presented a clear picture of the northern countries as experienced by Norse explorers: north of Iceland a vast, barren plain (which we now know to be the Polar ice-cap) extended from "Biarmeland" (northern Russia) east of the White Sea, to Greenland, then further west and south were, in succession, Helluland, Markland and Vinland. The Icelanders had no knowledge of how far south Vinland extended, and they speculated that it might reach as far as Africa.