Oldest Firearm in U.S. Unearthed in Arizona: A 500-Year-Old Cannon Tied to Coronado's Expedition

Coronado Sets Out to the North. oil painting by Frederic Remington, c. 1900. Public Domain

Oldest Firearm in U.S. Unearthed in Arizona: A 500-Year-Old Cannon Tied to Coronado’s Expedition

Archaeologists in Arizona have made a groundbreaking discovery—a 500-year-old bronze cannon, marking it as the oldest known firearm in the continental United States.