11 January 2025 The Future is the Product of the Past

Oldest US firearm unearthed in Arizona, a 500-year-old bronze cannon linked to Coronado expedition

Independent researchers in Arizona have unearthed a bronze cannon linked to the 16th-century expedition of Francisco Vázquez de Coronado, and it is marked to be the oldest known firearm found in the continental United States.

The 42-inch-long, roughly 40-pound sand-cast bronze cannon was discovered at the location of a Spanish stone-and-adobe structure in the Santa Cruz Valley that is thought to have been a part of the short-lived settlement San Geronimo III.

To finance an expedition to North America in 1539, Vázquez de Coronado took out large loans and mortgaged his wife’s possessions. The Spanish conquistador and his 350 soldiers intended to locate the legendary (and nonexistent) Seven Cities of Gold north of Mexico. By 1541, they had reached southern Arizona, where they established a settlement they called San Geronimo III, or Suya. San Geronimo was the first European town in the American Southwest.

 Rather than accumulating immense wealth, Coronado and his men plied, and spent the next three years plundering, enslaving, and murdering their way across the region. These transgressions did not go unanswered. In the predawn hours of one fateful morning in 1541, the native Sobaipuri launched a surprise attack on the town. Many settlers were killed in their beds, and the survivors fled in disarray. The cannon — meant to intimidate and protect — was never even loaded.

Although Coronado was bankrupt and facing war crime charges when his expedition came to an end in Mexico City, his impact on North America would last for many generations.

The wall gun was resting on the floor of a Spanish structure. Credit: International Journal of Historical Archeology

One site in particular has produced a large number of artifacts associated with the explorers, according to the authors of a study published on November 21st in the International Journal of Historical Archeology. Researchers found European pottery, weapon parts, including a 42-inch-long bronze cannon, and glass and olive jar fragments in the ruins of a stone and adobe building in Arizona’s Santa Cruz Valley.

“Not only is it the first gun ever recovered from the Coronado expedition, but consultation with experts throughout the continent and in Europe reveal that it is also the oldest firearm ever found inside the continental USA,” Archaeologist Deni Seymour explained.

The early firearm also called a wall gun, was typically used as a defensive weapon positioned on a wooden tripod on fortification walls and required two operators. However, in Coronado’s case, such a cannon would have been used offensively, typically to pierce the weaker walls of buildings in Indigenous communities.

Archaeologists were able to date the cannon to Coronado’s time using radiocarbon dating and optically stimulated luminescence techniques, and the other artifacts matched descriptions of the supplies and possessions of his expedition. However, the wall gun’s simple casting suggests that, in contrast to more elaborate Spanish cannons, it might have been built in Mexico or the Caribbean—and possibly even acquired from Ponce de León’s previous expedition.

Seymour, D., Mapoles, W.P. Coronado’s Cannon: A 1539-42 Coronado Expedition Cannon Discovered in Arizona. Int J Histor Archaeol (2024). https://doi.org/10.1007/s10761-024-00761-7

Cover Image Credit: A bronze medieval-style wall or rampart gun, believed to have been part of the Francisco Vázquez de Coronado expedition found in southern Arizona. Credit: Deni J. Seymour

Related Articles

New mosaics unearthed in “Zeugma of the Black Sea”

3 October 2022

3 October 2022

New mosaics with various figures were unearthed during the ongoing excavations in the ancient city of Hadrianopolis, which is called...

The enigma behind King Tut’s’space dagger,’ according to archaeologists, has finally been solved

24 February 2022

24 February 2022

Archaeologists have finally solved the enigma of King Tutankhamun’s dagger, which was discovered 3,400 years ago. A new examination of...

A spectacular rare ancient Roman bronze coin depicting the moon goddess was discovered off the coast of Israel

25 July 2022

25 July 2022

A rare 1850-year-old exceptionally well-preserved bronze coin depicting the Roman moon goddess Luna has been found off the coast of...

A rare 2,500-year-old marble disc, designed to protect ancient ships and ward off the evil eye discovered near Palmachim Beach

5 August 2023

5 August 2023

A rare 2,500-year-old marble disc designed to protect ancient ships and ward off the evil eye was discovered by a...

A secret chamber has been found in the famous Gorham Cave Complex

29 September 2021

29 September 2021

A cave chamber sealed off by sand for some 40,000 years has been discovered in Vanguard Cave inside the Gorham’s...

6000-Year-Old Salt Production House Rewrites Europe’s History

31 March 2021

31 March 2021

Archaeologists in the UK have found an ancient stone age-era salt-production house in North Yorkshire, estimated to be older even...

The Stonehenge road tunnel is illegal, according to the High Court

23 June 2021

23 June 2021

The transport secretary’s decision to allow a road tunnel to be built near Stonehenge was unlawful, according to the high...

A Scandinavian Roman gladiator in York: Research Reveals Unknown Migrations Before the Viking Age

7 January 2025

7 January 2025

Scandinavian genes were present on the British Isles several centuries earlier than previously thought, including evidence from a man buried...

8000 years old fingerprint and ceramic production workshop found in İzmir Ulucak Mound

22 August 2022

22 August 2022

It was understood that the structure unearthed during the ongoing excavations in the 8850-year-old Ulucak Mound (Ulucak Höyük), the oldest...

A Roman bridge from the Republican era was discovered on Via Tiburtina

27 February 2022

27 February 2022

The remains of a rare Republican-era bridge have been discovered on the 12th kilometer of the Via Tiburtina, the ancient...

Researchers discover America’s oldest mine

23 May 2022

23 May 2022

Archaeological digs headed by Wyoming’s state archaeologist and including University of Wyoming experts have revealed that people began producing red...

The Splendor of the Seven Descending Gods of Tulum Resurfaced

11 February 2024

11 February 2024

The National Institute of Anthropology and History (INAH) says the splendor of the seven Descending Gods of Tulum has resurfaced....

Thousand-year-old bone skate discovered in Czech Republic

20 March 2024

20 March 2024

Archaeologists from the central Moravian city of Přerov, Czech Republic have announced a unique discovery. While carrying out excavations in...

Archeologists find a 3,500-year-old mosaic in central Turkey

16 September 2021

16 September 2021

Archaeologists have discovered a 3,500-year-old mosaic in central Turkey, which might be one of the world’s oldest. The impressive power...

Unsolvable Megalithic Mystery of ancient Greek “Dragon Houses”

8 January 2025

8 January 2025

The Dragon Houses of Euboea, which probably dates to the Preclassical period of ancient Greece, are one of the historical...