The 1452–1453 Mystery Eruption That Shivered the World
A likely global-scale eruption in 1452–1453 injected about 11 megatons of sulfur into the stratosphere—roughly a third of Tambora’s 1815 output—leaving a distinct chemical spike in ice cores and evidence of widespread cold in historical records, including Chinese chronicles and tree rings. The source volcano remains unidentified as no ash layer has been found, though contemporaries reported a red glow near Hagia Sophia that may have been sunlight on ash clouds; the event coincided with the fall of Constantinople, but its exact volcanic origin remains a mystery.