Dülük Ancient City is located 10 kilometres north of Gaziantep city center, Dülük, whose first known settlement dates back to 600 thousand years. The site is divided into two as 'Ancient City' and 'Sanctuary' . The ancient settlement is under the ground on Keber Hill and its surroundings to the north of Dülük Village. The sanctuary is located on Dülük Baba Hil , approximately 3 kilometers north of Dülük Village.
The Mithraeum of Dülük was unearthed in 1997-1998 as a result of the excavations of Gaziantep Archeology Museum and Germany Münster University.