Secrets of the Viking sword
The Vikings were the most ferocious warriors of the Middle Ages. Especially fearsome were the select few who wielded a formidable weapon: a light, razor sharp, virtually indestructible sword with its maker's name, ULFBERHT, inlaid along the blade. But who Ulfberht was, where the sword came from, and how it was made remained secrets for more than 1,000 years?