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The First Landing is term generally used to describe the first appearance of Nordling humans on the Continent many centuries after the Conjunction of the Spheres, when they started moving up the Yaruga and Pontar Delta to settle. It is thought to have taken place sometime in the 760s. Jan Bekker is said to be among those first arrivals.
There is no information in the novels describing where the humans arrived from, only that they arrived on the Continent by ship.