A rare ancient Roman helmet has surfaced in Denmark, far beyond the Empire's northern frontier. But the most interesting part is that it wasn't just casually lost during some long-forgotten battle.

The helmet is believed to date back to Denmark's Late Iron Age. Roman helmets in southern Scandinavia are rare from this period. So far, no similar findings have been made.

Archaeologists Discover a Stash of 1,500-Year-Old Weapons—Including the Only Known Roman Helmet Ever Found in Denmark The cache included swords, spears, lances and chainmail. Researchers think ...