New excavations and geomagnetic data from the Eilsleben site in Germany reveal a massive, fortified outpost dating back to 5375 BC. As the northernmost edge of the early Neolithic world, this site offers rare evidence of the complex, and likely tense, interactions between incoming farmers and indigenous hunter-gatherers.

To survive this frontier, the settlers at Eilsleben constructed two distinct layers of defense. One was made of earth, wood, and sweat. The other was forged from ritual, bone, and communication.

Bigger Than We Thought

Eilsleben, a site in modern-day Saxony-Anhalt, Germany, has been known for decades. However, magnetic investigations have showed that the site is much bigger than thought; eight times bigger, to be precise. It measures around 80,000 square meters.

Geomagnetic surveys function like an X-ray for the landscape, measuring subtle differences in the Earth’s magnetic field created when humans disturb the soil — such as digging ditches, burning structures, or filling pits with organic material, all of which create magnetic “anomalies” that contrast with the surrounding undisturbed earth. At Eilsleben, the data clearly showed three separate fortification systems consisting of V-shaped ditches, ramparts, and palisades. The earliest of them was a behemoth stretching 400 meters wide.