A passage barely a meter high, fifty centimeters wide, an impossible curve and a niche carved into the wall. There are no paintings, no clear trousseau, nor signs of daily use. Only compact earth, silence and a question that is repeated throughout Europe: why were the Erdstall?
The last clue comes from Germanyspecifically from the region of Saxony-Anhalt. There, on the plain near Reinstedt, a team of archaeologists has documented a erdstall late medieval excavated, no less, than within the pit of a Neolithic tomb of the culture Baalbergdated to the fourth millennium BC. C. Two worlds separated by more than five thousand years sharing the same subsoil.
What exactly is a Erdstall?
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The term erdstall —literally, “place on earth”— is used to designate systems of underground tunnels excavated by humans, generally between the High and Late Middle Ages. Their most striking feature is their extreme narrowness: they are not designed to walk upright, but rather to move forward crouching, sideways or crawling.
As is made clear to us in this TikTok, they usually present:
- winding and narrow corridors
- small side niches
- steps carved directly into the earth
- deliberately sealed accesses
And, above all, an almost total absence of objects that explain its function.
A discovery that mixes eras
In Reinstedt, preventive excavations carried out by the State Office for Monument Preservation and Archeology Saxony-Anhalt They first revealed an ancient Neolithic funerary site. Then, later graves, remains from the Bronze Age… and finally, an anomaly: a pit that did not end, but went into the subsoil.
What seemed like just another tomb ended up being the entrance to a erdstall. Medieval ceramic fragments, a horseshoe, bones of small animals, the complete skeleton of a fox and a thin layer of charcoal appeared inside, with no signs of prolonged fire. Everything points to a brief, punctual and deliberately discreet occupation.
Especially revealing is the intentional sealing of the access with large stones and the presence of a carved niche, perhaps for an ephemeral light or a symbolic object.
Refuge, ritual… or something we don’t understand?
This is where the real mystery begins. The hypotheses have been repeated for decades, without definitive consensus:
- Temporary shelters: hiding places in times of conflict, raids or persecutions.
- Ritual uses: spaces linked to pre-Christian beliefs, rites of passage or symbolic practices related to the land.
- Marginal places: excavated in avoided or feared locations—such as ancient pagan tombs—for activities that required invisibility.
In the German case, archaeologists propose that the Neolithic mound, still visible in the Middle Ages as an elevation of the terrain, functioned as a perfect “mark” to remember the location of the tunnel. It is also possible that the superstitious aura of the place made it the ideal hiding place.
A European (and surprisingly uniform) phenomenon
The most disturbing thing is that Reinstedt is no exception. The earth stables They are spread across half of Europe: southern Germany, Austria, the Czech Republic, Slovakia, Hungary, Poland, France and even some areas of the United Kingdom and Spain. They receive different names —Secret passages, Grufen, Schratzlloch— but they share dimensions, layout and construction logic.
They rarely exceed 50 meters in length. They never seem designed to live. And they almost always force the body to shrink.
Maybe that’s the key. They were not comfortable spaces. They were necessary spaces. To hide, to symbolically cross the earth or to do something that should not be seen.
Today, centuries later, we continue to enter them just like those who excavated them: without fully knowing what we were going for… but with the certainty that something is happening down there that we still do not understand.
