Grønhaug: The Viking Ship Burial Hiding a Bronze Age Grave

• History Warrior Team
• August 13, 2026
• Categories: Viking Treasures & Relics
• Tags: Archaeology, Norway, Viking History, Viking Ships

A burial mound on the Norwegian island of Karmøy just gave up secrets it had kept since the Viking Age — and then some. In early August 2026, archaeologists reopened the Grønhaug ship burial for the first time since 1902, and beneath the remains of a Viking longship they found something even older: a probable Bronze Age grave, built more than a thousand years before the Vikings ever touched the site.

Update, August 18, 2026: the ship above has now been dated to roughly A.D. 864 — see the new dating and preservation details.

What Is Grønhaug?

Grønhaug ("the green mound") sits in a row of monumental burial mounds on Karmøy, an island on Norway’s southwestern coast that once controlled the Karmsund strait — the sheltered coastal channel ships used to avoid the open sea, and reputedly the very route that gave Norway its name (Norðvegr, "the way north"). A few miles away at Avaldsnes, often called Norway’s oldest royal seat, kings collected toll from ships using that passage for centuries. Grønhaug’s ship was first opened in 1902 by archaeologist Haakon Schetelig, who confirmed a vessel was buried inside but never fully excavated the site. It then sat undisturbed for over 120 years.

What This Summer’s Dig Found

Picking up where Schetelig left off, a team from the University of Stavanger recovered two iron rivets from the ship’s hull and pine timber fragments discarded during the 1902 dig. The bigger surprise was organic: well-preserved birch bark, and — sealed under the mound since the Viking Age — actual blueberry plants and heather from the original ground surface the mound was built on. That kind of preservation lets researchers reconstruct what the Karmøy landscape looked like the day the mound went up, not just what the ship and grave goods can tell them.

The Real Surprise: A Bronze Age Grave Underneath

The find that made headlines wasn’t the ship — it was what’s under it. "We have now excavated through the mound, and we can confirm that there is probably a Bronze Age mound underneath it," said lead archaeologist Marie Ødegaard. Scandinavia’s Bronze Age ended over a thousand years before the Viking Age began, so whoever buried a ship at Grønhaug wasn’t picking an empty hillside — they were building on top of ground that was already ancient, and already understood as sacred. Stacking a new grave on an old one was a deliberate move: it ties the newly dead to a much older, borrowed authority.

Why a Ship Burial Like This Matters

Ship burials are rare — only a handful are confirmed anywhere in Europe, and Norway holds most of them. Alongside Grønhaug sit the Herlaugshaugen mound, whose ship actually predates the Viking Age, and the Oseberg ship, whose intricately carved serpent-head prow is currently on rare public display. Grønhaug’s ship has traditionally been dated to around 780 AD, just before the conventional start of the Viking Age in 793 — though some researchers argue for a later date closer to 864 AD, still comfortably inside it. Either way, a ship burial meant you were sent off in style: in Norse belief, the right vessel and grave goods were how a warrior or chieftain made the journey to the next world — Valhalla included.

Quick Answers

When was the Grønhaug ship burial reopened? In early August 2026 — the first excavation of the site since archaeologist Haakon Schetelig’s initial dig in 1902.

How old is the ship? Traditionally dated to around 780 AD, though some researchers place it closer to 864 AD — either way, within the Viking Age.

What did archaeologists find? Two iron ship rivets, discarded pine timber from the 1902 dig, preserved birch bark and Viking-age vegetation, and evidence of an older Bronze Age mound beneath the ship grave.

Who led the excavation? Marie Ødegaard and Håkon Reiersen of the University of Stavanger’s Museum of Archaeology, commissioned by the Norwegian Directorate for Cultural Heritage and Rogaland County Municipality.