16 September 2025 The Future is the Product of the Past

Man-made Viking-era cave discovered in Iceland Bigger, Older Than Previously Thought

Archaeologists from the Archaeological Institute of Iceland have uncovered an extensive system of interconnected structures that are not only much larger than initially thought but also much older, during excavations in Viking-era man-made caves near Oddi in South Iceland.

Archaeologists believe that the man-made caves were excavated in the middle of the tenth century. Man-made caves at Oddi were first discovered back in 2018.

The most recent research project revealed a much larger cave that is connected to the broader cave system.

Archaeologist Kristborg Þórsdóttir, who led the research said “The size of these structures is just so vast, there hasn’t been a study of such large structures, and definitely not from this time period in Iceland.” 

Oddi was once one of Iceland’s most important cultural and political seats and home to a powerful clan known as the Oddverjar. Saemundur the Learned (AD 1056-1133), who penned the early chronicles of the Norwegian Kings, was one of the most prominent clan members. He studied in France and wrote one of the earliest histories of the Norwegian kings, although that manuscript was lost.

Kristborg Þórsdottir. The excavation site seen from above
Kristborg Þórsdottir. The excavation site is seen from above

The settlement developed into a major center for culture and learning, with Iceland’s patron saint, Þorlákur Þórhallsson, receiving his education at Oddi from the age of nine (AD 1142-1147).

Archaeologists’ race against time

Kristborg and the team’s biggest problem has been securing the cave and making sure it doesn’t collapse on the people working inside. The texture of the rock is prone to crumble and the cave is deep, which can lead to dangerous outcomes.

Time is of the essence for the team, who feel any delay would result in the loss of precious artifacts and data. The caves are not only at a significant depth, which is dangerous for the archaeologists involved in digging them out, but also built into sandstone. It’s thought that the caves were not used for very long because they are so prone to disintegration.

Photo: Archaeological Institute of Iceland

There’s a lengthy and complicated history waiting to be unearthed

Researchers result, so far, a historic church, farm, and vicarage have been unearthed. In fact, when Christianity came to Iceland around 1000 AD, Oddi was one of the first places to build a church.

Archaeologists believe that the new cave may be a nautahellir, a medieval stall used for cattle and horses. Such caves are mentioned in Bishop Þorlákur’s “Legends of Saints” from AD 1210-1250, where he describes how a nautahellir collapsed with 12 bulls still inside, with only one of the animals being rescued from the rubble

“Although it’s older than that, it’s likely that [the cave] was used for livestock,” explained Kristborg. “Whether it was for that specific bull, we don’t know. But the history of its use obviously goes back further than we’ve managed to trace yet.”

However, there is still a lot we don’t know about this man-made cave. It was likely used for something else before becoming a livestock pen.

According to Kristborg, the caverns at Oddi have a complicated and intriguing tale to tell, but the magnitude of the present research requires her and her colleagues to keep their focus focused. “These are massive buildings and an enormous cave system that we’re only now beginning to comprehend.” […] To get to the bottom of this and track the history of these caves’ use in detail, we’d need to do a much, much larger research with a much larger staff.”

Cover Photo: Lísabet Guðmundsdóttir

Related Articles

The ruins of a temple dedicated to Goddess Kubaba found for the first time in ancient city of Kastabala, southern Türkiye

17 December 2023

17 December 2023

Ruins of a temple belonging to the goddess Kubaba were found in the Ancient City of Kastabala. The ancient city...

Radiocarbon dating shows that the Roman settlement of Karanis survived in Egypt until the Arab Conquest in the 7th century AD

13 May 2024

13 May 2024

New research results are rewriting the history of Karanis, an ancient Greco-Roman agricultural settlement in the Fayum oasis in Egypt....

More than 56400 Cultural Goods Seized in Operation Pandora V

11 May 2021

11 May 2021

Operation Pandora V, aimed at preventing the illegal trade of cultural goods, has been one of the most successful operations...

Discovery of immense 4,000-year-old fortifications surrounding the Khaybar Oasis, one of the longest-known Oasis

10 January 2024

10 January 2024

Archaeologists have recently made a groundbreaking discovery in northwestern Arabia, unearthing immense fortifications that date back an astonishing 4,000 years....

The oldest trace of human activity discovered in North America dates back 23,000 years

26 September 2021

26 September 2021

A recent fossil footprint found in New Mexico, the United States, indicates that humans existed in North America about 23,000...

Symbol of Eternal Loyalty Found on Rare Medieval Sword in the Netherlands

14 June 2025

14 June 2025

A remarkable medieval sword, dating back nearly 1,000 years, has been discovered in the Dutch province of Utrecht bearing a...

The World’s Oldest Smiling Water Flask with Emoji will be on display

4 July 2021

4 July 2021

After the collapse of the Hittite Empire, the Late Hittite States was established in Anatolia and Syria. One of these...

The discovery of great importance for Urartian archeology in Çavuştepe castle: Discovered a horse skeleton with a bronze curb bit in its jaw

28 September 2023

28 September 2023

Archaeologists unearthed a horse skeleton with a bronze curb bit (a metal piece inserted into its mouth to guide the...

Aspendos Excavation Reveals Rare 1,700-Year-Old Roman Emperor’s Statue Head

9 August 2025

9 August 2025

Archaeologists have uncovered a remarkable marble head believed to depict a Roman emperor during excavations in the ancient city of...

The 6,000-year-old settlement found in island of Corsica

2 May 2023

2 May 2023

Archaeologists in a French municipality recently excavated the slopes of Punta Campana (island of Corsica) in preparation for a construction...

Remarkable discovery of Iron Age and Roman treasures found near a boggy area on Anglesey

29 February 2024

29 February 2024

Metal detectorist Ian Porter unearthed sixteen historical artifacts in a boggy field on Anglesey. Among the items found were Iron...

Bronze Age Wedge Tomb Discovered on the Dingle Peninsula maybe Even Older

22 April 2021

22 April 2021

A wedge tomb recently discovered on the Dingle Peninsula of Ireland was described by archaeologists as “quite unusual”. Wedge tombs...

The altar of Zeus Temple discovered in western Turkey

1 September 2023

1 September 2023

Archaeological excavations in the ancient city of Magnesia, located in the western province of Aydın’s Germencik district, have uncovered the...

Małopolskie Region Reveals Oldest Evidence of Metal Mining in Poland, Dating Back 1,000 Years Earlier Than Previously Thought

16 February 2025

16 February 2025

Researchers have uncovered the oldest confirmed evidence of metal ore mining and metallurgy in Poland through the study of lead...

Hand disease known as Viking disease may have its origins in Neanderthal genes

14 June 2023

14 June 2023

A recent study in the Oxford University Press journal Molecular Biology and Evolution demonstrates that a condition known as Dupuytren’s...