Coordinates: 40°14′04″N 34°41′44″E / 40.23444°N 34.69556°E / 40.23444; 34.69556

Alacahöyük or Alaca Höyük (sometimes also spelt as Alacahüyük, Euyuk, or Evuk) is the site of a Neolithic and Hittite settlement and is an important archaeological site. It is northeast of Boğazkale (formerly and more familiarly Boğazköy), where the ancient capital city Hattusa of the Hittite Empire was situated. Its Hittite name is unknown: connections with Arinna, Tawiniya, and Zippalanda have all been suggested.

The mound (Turkish höyük) at Alacahöyük was the center of a flourishing Hattian culture during the Early Bronze Age. The mound was a scene of settlement in a continuous sequence of development from the Chalcolithic Age, when earliest copper tools appeared alongside the use of stone tools. It has been continuously occupied ever since, until today's modern settlement in the form of a small village. The standing and distinguishing remains at Alacahöyük, however, such as the "Sphinx Gate", date from the Hittite period that followed the Hatti, from the fourteenth century BC.

Alaca is one of the largest districts of Çorum Province in the Black Sea region of Turkey. It is located 52 km (32 mi) from the city of Çorum, on a road from the Black Sea coast to central Anatolia. Population is 22,092 as of 2010.

The ancient Hittite settlement of Alacahöyük is located in Alaca district.

Graham Hancock (born 2 August 1950 in Edinburgh, Scotland) is a British writer and journalist. Hancock specialises in unconventional theories involving ancient civilizations, stone monuments or megaliths, altered states of consciousness, ancient myths and astronomical/astrological data from the past. One of the main themes running through many of his books is the possible global connection with a "mother culture" from which he believes all ancient historical civilizations sprang.

Born in Edinburgh, Scotland, Hancock's formative years were spent in India, where his father worked as a surgeon. Having returned to the UK, he graduated from Durham University in 1973, receiving a First Class Honours degree in Sociology.

As a journalist, Hancock worked for many British papers, such as The Times, The Sunday Times, The Independent, and The Guardian. He was co-editor of New Internationalist magazine from 1976–1979 and East Africa correspondent of The Economist from 1981-1983.