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The Unopened Tomb of the First Emperor

PlacesLintong, Xi'an, Shaanxi, China · Built around 246–208 BCNever opened

China's first emperor lies under a mound that has never been opened, said to hold rivers of mercury.

What was reported

Qin Shi Huang, who unified China in 221 BC, was buried near present-day Xi'an under a great earth mound. The terracotta army, found by farmers digging a well in 1974, was buried in pits about 1.5 km to the east as part of the same complex.

The historian Sima Qian, writing about a century after the burial, described a tomb chamber with a model of the empire, rivers and seas of flowing mercury, a ceiling set with the stars, and crossbows rigged to shoot intruders.

Explanations offered

Soil tests on the mound have found unusually high levels of mercury, suggesting Sima Qian's account may be partly true. Chinese authorities have decided not to excavate the tomb until it can be done without damaging what's inside, so what lies there is still unknown.

When
Built around 246–208 BC
Where
Lintong, Xi'an, Shaanxi, China
Witnesses
The historian Sima Qian, writing about a century later
Status
Never opened

Famous cases are real, widely reported events. Each file sets out what witnesses said and the explanations that have been offered, without taking a side.