2 July 2025 The Future is the Product of the Past

Researchers discover America’s oldest mine

Archaeological digs headed by Wyoming’s state archaeologist and including University of Wyoming experts have revealed that people began producing red ocher almost 13,000 years ago in an old mine in eastern Wyoming.

According to the researchers, that makes the Powars II site at Sunrise in Platte County the oldest documented red ocher mine — and likely the oldest known mine of any sort — in all of North and South America.

Wyoming State Archaeologist Spencer Pelton said: “We have unequivocal evidence for use of this site by early Paleoindians as long as 12,840 years ago and continuing by early Americans for about 1,000 years.”

The excavations confirmed theories advanced by famed University of Wyoming archaeologist George Frison, which stem from research he began at the site in 1986.

Red ocher, also known as hematite, had a variety of purposes in Paleoindian communities, including use as ceremonial pigment rituals. It has been discovered in ancient tombs, caches, campsites, and kill sites throughout the Great Plains, Rocky Mountains, and beyond. The Powars II site is the only red ocher quarry discovered in the North American archaeological record north of southern Mexico, and one of just five in the Americas.

This complete Clovis point was recovered from the Powars II site. Photo: Spencer Pelton
This complete Clovis point was recovered from the Powars II site. Photo: Spencer Pelton

Among the artifacts previously discovered at the Powars II site are Clovis points, believed to be from the first inhabitants of North America, along with other projectile points, tools, and shell beads.

The 2017-2020 excavation led by Spencer Pelton — a 6- by 1-meter trench bisecting a previously undocumented quarry feature — yielded several thousand more Paleoindian artifacts, along with many well-preserved animal bones and antlers. The animal bones and antlers were used to extract the red ocher in the quarry.

The projectile points come from numerous locations in the region, including from as far away as the Edwards Plateau in Texas, according to the paper. That makes it likely that the red ocher found at archaeological sites throughout the American midcontinent came from the Powars II quarry.

“Beyond its status as a quarry, the Powars II artifact assemblage is itself one of the densest and most diverse of any thus far discovered in the early Paleoindian record of the Americas,” Pelton says. “The site contains over 30 chipped stone tools per square meter, some of the oldest canid remains from an American archaeological site and rare or unique artifacts, among other distinctions.”

The researchers say the evidence discovered so far indicates the quarry was used in two primary periods. During the first, dating to as long as 12,840 years ago and lasting several hundred years, people not only quarried red ocher — using bones and antlers as tools — but also produced and repaired weapons, along with other activities. After a hiatus of a century or more, the site was occupied by humans who mined red ocher and deposited artifacts in piles in a quarry pit.

“Further excavation of the estimated 800-square-meter remainder of the site will certainly reveal complexity not captured by our sample,” the researchers wrote.

The findings appear in the National Academy of Sciences (PNAS).

University of Wyoming

https://doi.org/10.1073/pnas.2201005119

Related Articles

The 8,000-year-old Aslantepe in Turkey has been added to the UNESCO World Heritage List

26 July 2021

26 July 2021

The Turkish Foreign Ministry said Monday that a rich, 30-meter-high archaeological mound going back 8,000 years in southern Turkey has...

New Discoveries of Sanxingdui Ancient City to be Announced

19 March 2021

19 March 2021

Sanxingdui, which literally means “Stacks of Three Stars”, is a cultural relic of the Kingdom of Shu in ancient China....

Seven Roman altars multicolored in the Great Northern Museum

12 November 2021

12 November 2021

We know that the ancient world is now very colorful. But these colors weren’t just limited to robes and other...

Complex Of Early Neolithic Monuments Discovered In Herefordshire, England

22 July 2023

22 July 2023

Archaeologists discovered a remarkable complex of early Neolithic monuments while investigating the area around Dorstone Hill in Herefordshire, England. The...

Important archaeological find in the seas of Sicily: Archaic stone anchors found off Syracuse

24 November 2023

24 November 2023

During a joint operation by the Maritime Superintendency of the Sicilian Region and the Diving Unit of the Guardia di...

Ancient Roman Road with Porticoes and Rare Artifacts Discovered in Switzerland

6 May 2025

6 May 2025

A major rescue excavation in Kaiseraugst, northern Switzerland, has revealed a substantial Roman road complete with porticoes, alongside poignant infant...

Fossils of sea creatures 35 million years old discovered in eastern Turkey

17 August 2021

17 August 2021

In Turkey’s eastern province of Mus, a team of researchers discovered fossils of sea creatures estimated to be 35 million...

Was the mystery of Noceto Vasca Votiva the water ritual?

13 June 2021

13 June 2021

The Noceto Vasca Votiva is a one-of-a-kind wood building discovered in 2005 on a tiny hill in northern Italy. The...

A pendant with a figure of St. Nicholas found in the Ancient Church Hidden in Turkish Lake

7 October 2022

7 October 2022

Underwater archaeological excavations and research, which were started 8 years ago in the basilica located 20 meters off the lake...

2,600-year-old Terracotta Pipeline found in India

11 August 2024

11 August 2024

During the 10th phase of archaeological excavations at the Keeladi archaeological site in Tamil Nadu, India, archaeologists uncovered a terracotta...

Oldest prayer beads made from salmon vertebrae found on England’s Holy island

28 June 2022

28 June 2022

On the island of Lindisfarne, just off the coast of Northumberland, known in England as the “Holy Island“, archaeologists have...

Ancient Mesopotamian Cylinder Seals Offer Clues to the Origin of Writing

6 November 2024

6 November 2024

Researchers from the University of Bologna have discovered an association between proto-cuneiform and even older stone images engraved on ancient...

10,000-year-old Settlement Discovered in Turkey’s Şanlıurfa

25 June 2021

25 June 2021

A Neolithic settlement was discovered in the garden of a house in the Sayburç Neighborhood of Şanlıurfa’s Karaköprü district. News...

Historic Leeds cemetery discovery unearths an ancient lead coffin belonging to a late Roman aristocratic woman

14 March 2023

14 March 2023

Archaeologists in northern Britain uncovered the skeletal remains of a late-Roman aristocratic woman inside a lead coffin, as well as...

Iznik Archaeology Museum reveals 2,500-year-old love letter

16 January 2023

16 January 2023

İznik is an ancient habitation that hosts various civilizations due to its fertile lands, trade routes, and many other reasons....