In Spain, the scanner helped to find an unknown fortress of the fifth century

(ORDO NEWS) — Spanish archaeologists from the University of Santiago de Compostela have used LiDAR laser scanning technology to discover underground the remains of a previously unknown fortress that was built about 1,500 years ago.

According to Heritage Daily, a new archaeological site was actually discovered on the border between the provinces of A Coruña and Ponteveder in Spain.

Laser scanning technology has pointed to the ruins of a fortress, which, according to preliminary estimates, was active during the period from the fifth to the seventh century AD.

Increasingly used by archaeologists around the world, LiDAR technology can scan the soil and reveal structures that lie below the surface.

Using laser scanning, a detailed map of such objects is created, and then archaeologists go to the site and conduct field research.

In this case, underground structures were discovered using a scanner in the town of Castro Valente. Previously, archaeologists have found traces of a fortified Iron Age settlement here, but it existed between 1500 and 500 BC.

A new study has shown that a fairly large early medieval fortress surrounded by a powerful defensive wall about a kilometer long existed at the same place.

Scanning showed that the fortress included 30 towers and was built in the Roman style. In particular, it looks like a fortress from the third century AD that existed on the territory of the modern city of Lugo in Spain.

A field study showed that the fortress walls were built of two-layer masonry, and their thickness varied from two to almost five meters.

The excavations made it possible to discover the ruins of seven towers, one of which was destroyed, probably during the siege of the fortress.

The team of archaeologists also identified several internal structures. These structures were not as massive and durable as the fortress walls.

Rather, they were temporary structures built of brick. Perhaps the Roman garrison was stationed here, whose task was to protect the main military roads.

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