Luciana Pellegrino

The Ruins of Jiaohe In the scorching desert of western China, near Turpan, an entire ancient city was built in the strangest way imaginable—not upward, but downward. 🏜️👁️ Jiaohe sits on a narrow, mile-long island of solid earth, formed where two rivers diverge and surrounded on all sides by cliffs roughly 100 feet high. The city required no walls; the sheer cliffs served that purpose. Rather than stacking bricks, the builders excavated directly into the ground, leaving the original earth intact—meaning the streets, houses, and temples were all carved out of a single, solid block of land. At its peak, the site was home to approximately 7,000 people. Some sections date back roughly 2,000 years and remain standing today, preserved in near-perfect condition due to the almost complete absence of rain. The island was once dotted with hundreds of deep wells—yet, after more than a millennium, Jiaohe was abandoned and never inhabited again. Theories regarding its desertion vary: some point to a brutal Mongol war, others suggest the rivers dried up, or that religious conflict tore the society apart—to this day, historians remain divided. What could cause an entire city, carved from the very earth, to be left empty? The narrative notes: 👇 Unlike almost every other ancient city in the world, Jiaohe was not constructed by stacking stone upon stone; instead, it was entirely carved out of a massive loess plateau, excavated deep into the ground. Here are the most striking facts about this architectural marvel: 🏗️ Architecture through subtraction • No walls, no bricks: The builders did not use conventional construction materials. Instead, they excavated streets, homes, monasteries, and government buildings directly out of the raw, yellow loess soil. • Living underground: To protect themselves from the extreme temperatures of the Turpan Desert—often exceeding 40 °C (104 °F) in the summer—and the fierce desert winds, the inhabitants dug their living quarters deep into the earth. These subterranean spaces functioned as a natural air-conditioning system. 🛡️ A fortress without city walls • Natural protection: The city is situated on a 30-meter-high, ship-shaped plateau, flanked by two deep riverbeds. • Inaccessibility: Because the cliffs of the plateau drop off steeply, Jiaohe required no man-made city walls. Its very geography rendered it an impregnable fortress. ⏳ A tragic end For over a millennium, Jiaohe served as a thriving hub along the Silk Road and the capital of the ancient Jushi Kingdom. In the 13th century, however, the city was besieged and severely damaged during the campaigns of Genghis Khan. Following this destruction—compounded by a dwindling water supply—the inhabitants abandoned the city; the exceptionally dry desert air has since preserved the ruins in a near-perfect state to this day.