This sci.archeology post from 2009 contains more links to the Tanfield Valley site on Baffin Island that, as Heather Pringle's National Geographic article documents, may be the second confirmed Viking site on the North American continent after the famous L'Anse-aux-Meadows. I'm impressed.
Sutherland decided to reopen excavations at the most promising site, a place known as Tanfield Valley on the southeast coast of Baffin Island. In the 1960s U.S. archaeologist Moreau Maxwell had excavated parts of a stone-and-sod building there, describing it as "very difficult to interpret." Sutherland suspected that Viking seafarers had built the structure.
Since 2001 Sutherland's team has been exploring Tanfield Valley and carefully excavating surviving parts of the mysterious ruins. They have discovered a wide range of evidence pointing to the presence of Viking seafarers: pelt fragments from Old World rats; a whalebone shovel similar to those used by Viking settlers in Greenland to cut sod; large stones that appear to have been cut and shaped by someone familiar with European stone masonry; and more Viking yarn and whetstones. And the stone ruins bear a striking resemblance to some Viking buildings in Greenland.
Still, some Arctic researchers remained skeptical. Most of the radiocarbon dates obtained by earlier archaeologists had suggested that Tanfield Valley was inhabited long before Vikings arrived in the New World. But as Sutherland points out, the complex site shows evidence of several occupations, and one of the radiocarbon dates indicates that the valley was occupied in the 14th century, when Viking settlers were farming along the coast of nearby Greenland.
In search of other clues to help solve the mystery, Sutherland turned to the Geological Survey of Canada. Using a technique known as energy dispersive spectroscopy, the team examined the wear grooves on more than 20 whetstones from Tanfield Valley and other sites. Sutherland and her colleagues detected microscopic streaks of bronze, brass, and smelted iron—clear evidence of European metallurgy, which she presented October 7 at a meeting of the Council for Northeast Historical Archaeology in St. John's, Canada.
Sutherland speculates that parties of Viking seafarers travelled to the Canadian Arctic to search for valuable resources. In northern Europe at the time, medieval nobles prized walrus ivory, soft Arctic furs, and other northern luxuries—and Dorset hunters and trappers could readily stockpile such products. Helluland's waters teemed with walruses, and its coasts abounded in Arctic foxes and other small fur-bearing animals. To barter for such goods, Viking traders likely offered bits of iron and pieces of wood that could be carved into figurines and other goods, Sutherland says.
If Sutherland is correct, the lines of evidence she has uncovered may point to a previously unknown chapter in New World history in which Viking seafarers and Native American hunters were partners together in a transatlantic trade network. "I think things were a lot more complex in this part of the world than most people assumed," Sutherland said. James Tuck agreed. "It's pretty convincing that there was a much larger Norse presence in the Canadian Arctic than any of us thought."