Chinese Pyramids of Xi'an

Western fascination with 'forbidden' Chinese pyramids traces to a 1947 news story in which US pilot Maurice Sheahan reported seeing a colossal jewel-capped 'White Pyramid' near Xi'an, estimated — implausibly — at 300 metres tall, which would dwarf Giza. German author Hartwig Hausdorf popularised the tale in his 1994 book 'Die weiße Pyramide', claiming China concealed over 100 pyramids, that authorities forbade study, that trees were planted to camouflage them, and — in ancient-astronaut style — that Chinese legends of sky-descended emperors point to extraterrestrial builders in the remote past. Erich von Däniken's circle and later internet lore amplified the story, sometimes adding claims that the mounds align with Orion or match Giza's layout, or that their true age is tens of thousands of years.

Proponents cite the genuine strangeness of the sites: enormous monuments almost unknown to the Western public, the sealed and unexcavated central tomb, historical restrictions on foreign visitors, and the mercury anomaly — reading official caution as evidence of secrets. Some also point to the mounds' precise cardinal alignments and to slight, deliberate-looking deviations from true north as encoding lost geodetic knowledge.

Researchers have largely run these claims to ground: the 'White Pyramid' photograph published in 1947 is generally identified as Maoling, a documented Han tomb of ordinary (if grand) size, and no 300-metre pyramid exists on a plain that has now been comprehensively satellite-mapped by anyone with an internet connection. The dates of the mounds are fixed by texts and excavation, tree cover reflects erosion control, and alignment deviations have been explained by orientation to the rising sun or magnetic surveying methods of the period. What remains genuinely tantalising — and both sides agree — is that the First Emperor's burial chamber is still sealed, its contents known only from a 2,100-year-old description.