Ancient Carved Stone in Spain Bears Two Mystery Symbols

An ancient Carved Stone in Spain has handed archaeologists a small, stubborn puzzle: its faces carry different designs that may have been cut centuries apart. The granite object surfaced during excavations at a hillfort settlement in Galicia, and its second carving had been hidden face-down in the soil until researchers flipped the stone over.

The discovery was made on October 16, 2026, inside the ruins of a large circular building at Castro do Pico da Bandeira, near the coastal town of A Guarda. The stone measures about 26 by 33 centimetres. One face carries a crisp triskele, a three-armed spiral, while the reverse bears a more roughly cut geometric engraving that specialists have not yet identified. The object had lain in the ground long enough to press an impression of the engraving into the soil beneath it, an imprint that survived even after the stone was lifted, according to reports from the dig.

The open question is whether the stone was carved twice. The motifs differ in style and execution, and the team is weighing competing explanations: either both faces were decorated in the same period, or a later generation found an already-carved stone and added a new design. The combination has no closely comparable example anywhere in Galicia, ArkeoNews reports, which makes establishing the object’s history especially difficult.

A familiar symbol in an unfamiliar pairing

The triskele itself is no stranger to Iberian archaeology. Carved stone disks from the last centuries before the Roman conquest of Cantabria, known as Cantabrian stelae, are decorated with triskeles, swastikas, spirals and warriors, motifs often linked with sun worship, as summarized in a reference overview of the stelae. Across the northwest, hillfort settlements of the castro culture dotted the landscape, and the dig site was occupied during a period of growing Roman influence in the region, although the carvings themselves have not been securely dated. The region’s hillforts were built for visibility and defense, their round stone houses ringed by ramparts on high ground, and many stayed in use as Roman power spread across the northwest. That long occupation is exactly what makes double-faced stones so tantalizing: a settlement lived in for generations could easily produce an object whose faces belong to different eras. The triskele side is the careful one, cut with confidence; the geometric side is rougher, as if added by hands with different tools, different training, or a different sense of what the stone was for.

Recycling carved stones is a habit archaeologists recognize elsewhere. Near Aberlemno in Scotland, a Pictish symbol stone was later turned into paving beside a building’s entrance, its older artwork given a second life underfoot. The Galician find could be another chapter in that tradition — or something stranger. The excavation’s director, Nerea Vilariño, described the moment the hidden face was revealed as “a mix of surprise and joy,” adding that a stone decorated with different motifs on each side is quite unusual, as reported by Above The Norm News.

What happens to the stone now

The next steps are analysis rather than answers. Researchers will study the stone’s archaeological context — the soil layers and building remains around it — to narrow down when each face may have been carved, and conservators will stabilize the granite for eventual study and display. That work matters because hillfort societies are still being mapped: every reused object adds evidence that these communities handled older things with intention rather than by accident. Formal publication will follow, since the interpretations reported so far come from the excavation team and have not yet been peer-reviewed — standard for a fresh find, and a reminder that this stone’s story is still being written.

Recent digs keep rewriting the ancient world, from a lost marketplace unearthed at ancient Troy to laser scans that revealed a hidden ancient fleet in Cyprus and an aurochs skull staked over an ancient German grave. For now, the stone rests with the team that lifted it, awaiting the slow work of dating and conservation. The Carved Stone in Spain will need a second look — literally — before it gives up its full story.