In the 17th century, French-Canadian fur traders, or voyageurs, began exploring the Great Lakes and northern rivers by canoe. Voyageurs National Park covers part of their customary waterway, which became the border between the USA and Canada. Most of the park is accessible only by hiking or motorboat – the waters are mostly too wide and too rough for canoeing, though kayaks are becoming popular. A few access roads lead to campgrounds and lodges on or near Lake Superior.