For over two millennia, the tomb of Qin Shi Huang, China’s first emperor, has remained sealed, shrouded in mystery and legend. Despite decades of exploration in the surrounding area, archaeologists have refrained from opening the burial site due to concerns about potential damage and the presence of ancient booby traps.

A Monument Guarded by History

Qin Shi Huang, who reigned from 221 BC to 210 BC, is best known for unifying China and commissioning the iconic Terracotta Army—a vast collection of life-sized soldiers and horses designed to protect him in the afterlife. This extraordinary find was discovered by farmers in 1974 in China’s Shaanxi province, revealing a glimpse into the grandeur of the emperor’s mausoleum.

While excavation efforts have unearthed numerous artifacts around the tomb, the central chamber remains untouched, with researchers treading cautiously for multiple reasons.

Fears of Damage and Deadly Traps

Experts believe that disturbing the tomb could irreversibly damage its contents. The site’s fragile state, combined with the lack of advanced preservation techniques, makes opening it a high-risk endeavor. Additionally, historical texts suggest that lethal traps were installed to deter grave robbers.

The ancient Chinese historian Sima Qian, writing approximately a century after Qin Shi Huang’s death, described an elaborate underground palace filled with rare treasures. His records mention automated crossbows designed to strike intruders and a complex system of flowing mercury rivers meant to represent China’s major waterways.

Scientific Evidence Supports Mercury Fears

Even if the ancient traps have long since deteriorated, concerns remain about toxic mercury exposure. Studies have detected elevated mercury levels around the tomb, suggesting that the emperor’s burial chamber may contain significant amounts of the dangerous substance.

A 2020 scientific paper noted that volatile mercury could be escaping through cracks in the tomb’s structure, lending credibility to Sima Qian’s descriptions. This has further reinforced the cautious approach taken by researchers.

Exploring Alternatives

In an effort to balance scientific curiosity with preservation, archaeologists have considered using non-invasive technologies such as ground-penetrating radar and remote sensing. However, these methods have not yet provided a definitive way to safely explore the tomb’s interior.

For now, Qin Shi Huang’s final resting place remains sealed, a testament to both the awe-inspiring achievements of ancient China and the complexities of modern archaeological conservation.