"It will make us rethink the Dark Ages."

If you have a metal detector in your storage bin somewhere, don't get rid of it. Use it. You never know what you might find.

An amateur treasure hunter prowling English farmland with a metal detector stumbled upon the largest Anglo-Saxon treasure ever found, a massive seventh-century hoard of gold and silver sword decorations, crosses and other items, British archaeologists said Thursday.

One expert said the treasure found by 55-year-old Terry Herbert would revolutionize understanding of the Anglo-Saxons, a Germanic people who ruled England from the fifth century until the Norman conquest in 1066. Another said the find would rank among Britain's best-known historic treasures.