During 1609, Hudson heard about an inland sea route, more than likely the Great Lakes, and tried to go that way as the Northwest Passage. Although the Dutch had already gone up the St. Lawrence Seaway as early as 1607, Hudson tried for a route further south. He explored on the east Coast and finally ended up in what would be later be called the Hudson River. He had to stop around where Albany is now located as the river had become too shallow. Time had run out and he had to return back to England.