German study suggests ancient Ethiopian palace was a 19-story skyscraper

German study simulates 19-story skyscraper in Ethiopia from 2,800 years ago

A study by Brandenburg University of Technology and the German Archaeological Institute, published in Heritage, argues that the Grat Be'al Gibri palace in Yeha (highlands between Ethiopia and Eritrea) could have stood 19 stories tall approximately 2,800 years ago. Based on 3D models and PolyUQ software simulations, the research concludes the structure was viable with irregular stone guasonry and horizontal wooden beams, a system known as timber-laced guasonry. The finding has reignited debate on ancient technical capabilities, sparking reactions ranging from skepticism to irony and prejudice.

What the study says about the Yeha palace

The Grat Be'al Gibri palace, covering roughly 60 by 60 meters, is considered the largest known palace of its era in southern Arabia and eastern Africa. Dated around 800 BC, it was destroyed by fire in antiquity. Today, only parts of the ground floor and podium remain. Researchers recreated two wall sections—a corner and a doorway—and analyzed their load-bearing capacity using a method accounting for polymorphic uncertainty in material parameters.

The result: variations in wood properties barely affect wall load capacity. The analyzed structural system proved robust. Preliminary calculations suggest a building of at least 19 stories would be structurally viable. Even in the least favorable simulation, it reached 16 stories before collapsing. Authors conclude an extraordinary event—likely the historically documented great fire—caused the collapse.

From archaeology to memes: how the finding was received

The news triggered immediate reactions on social media and forums. Many comments do not discuss the study's methodology but ridicule it directly. References to Wakanda, Marvel's fictional nation, abound, treating the finding as cinematic fantasy. Others use sarcasm about technological evolution: "Do these people still think Wakanda is real?" reads one comment. The most repeated irony points out that if they built skyscrapers 2,800 years ago, it is unclear why that capability is not maintained today.

Some go further, questioning the methodology itself: "No way, 20 stories with cow dung as cement... I'm not convinced," summarizes a comment capturing the skepticism. The discussion drifts into ideological territory, with accusations that the study serves an agenda. Jokes also appear about non-existent elevators and the logistics of delivering bread to the top floor. Amid the noise, some messages provide context: recalling multi-story buildings in Yemen, mixing old and new styles dating to the Renaissance or Middle Ages, and megaliths in Menorca from 1200 BC.

Timber-laced guasonry: the technique that made it possible

The construction system is key. In irregular stone guasonry bonded with mortar, wooden beams were systematically inserted horizontally as reinforcing ribs. These styles, known as timber-laced guasonry, were widespread in southern Arabia and northeast Africa during the first millennium BC for multi-story structures.

Study authors Martin Drieschner and Mike Schnelle note these constructions "resemble modern hybrid timber structures used—or in project phases—in cities like Sydney, Hamburg, or Berlin for sustainable high-rise building." The comparison is significant: cross-laminated timber and mixed systems are currently the forefront of sustainable construction. That a similar principle was used 2,800 years ago invites a review of the timeline of structural innovation.

The simulation problem: uncertainty and historical sources

Until now, the solidity and height of Grat Be'al Gibri were known only through historical sources and graphic representations. Arab historians mention palaces up to 20 stories, while rock art and murals in southern Arabia show tower-like multi-height buildings. Researchers lacked exact data on many ancient building material properties, so they applied a procedure to account for polymorphic uncertainty in material parameters.

This is precisely the flank critics attack. The simulation relies on assumptions about materials for which no complete samples exist. The study itself acknowledges these are preliminary calculations. Drieschner defends that "this project exemplifies the knowledge interdisciplinary collaboration can bring" and highlights that "our methods of modern structural engineering can be directly applied to a 2,800-year-old construction." The scientific community has not yet issued a formal rebuttal, but the debate is open.

Africa in the imagination: the residue of prejudice

Beyond technical discussion, the finding has exposed a layer of prejudice in public conversation. Comments denying any technical capability to pre-colonial African civilizations—"they didn't discover the wheel, forging, or agriculture; will they discover vertical architecture?"—deliberately ignore the history of Aksum, Meroe, or Yeha itself. Archaeology has decades of documentation on complex urbanism, metallurgy, and long-distance trade in the Horn of Africa.

The irony is that the study does not claim those buildings were skyscrapers in the modern sense, but that available technology allowed multi-story structures. Confusing "viable" with "built" fuels easy jokes. Meanwhile, the underlying question remains unanswered: why was that technique lost? The fire explains the palace's destruction, but not the disappearance of a construction system described by authors as robust and widespread across the region.

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The study leaves an uncomfortable conclusion: modern structural engineering can be applied to 2,800-year-old constructions, showing they held up. What cannot be simulated is why that knowledge vanished while we continue debating whether it was possible.