A 3,300-year-old clay tablet from central Turkey describes a catastrophic foreign invasion of the Hittite Empire, a mysterious Bronze Age state. The invasion took place during a Hittite civil war, apparently in an effort to aid one of the warring factions, according to a translation of the tablet’s cuneiform text.

The palm-size tablet was found in May 2023 by Kimiyoshi Matsumura, an archaeologist at the Japanese Institute of Anatolian Archaeology, amid the Hittite ruins at Büklükale, about 37 miles (60 kilometers) southeast of the Turkish capital Ankara.

Archaeologists think Büklükale was a major Hittite city. The new discovery suggests it was also a royal residence, perhaps on a par with the royal residence in the Hittite capital Hattuša (also spelled Hattusha), about 70 miles (112 km) to the northeast.