During sporadic excavations at Boğazköy (Hattusa) that began in 1906, the archaeologist Hugo Winckler found a royal archive with 10,000 tablets, inscribed in cuneiform Akkadian and the same unknown language as the Egyptian letters from Kheta—thus confirming the identity of the two names. He also proved that the ruins at Boğazköy were the remains of the capital of an empire that, at one point, controlled northern Syria.
