The town of Dmanisi is first mentioned in the 9th century as a possession of the
Arab emirate of Tbilisi, though the area had been settled since the
Early Bronze Age. An
Orthodox Christian cathedral – “
Dmanisi's Sioni” – was built there in the 6th century. Located on the confluence of trading routes and cultural influences, Dmanisi was of particular importance, growing into a major commercial center of medieval Georgia. The town was conquered by the
Seljuk Turks in the 1080s, but was later liberated by the Georgian kings
David the Builder and
Demetrios I between 1123 and 1125. The
Turco-Mongol armies under
Timur laid waste to the town in the 14th century. Sacked again by the
Turkomans in 1486, Dmanisi never recovered and declined to a scarcely inhabited village by the 18th century.
Extensive archaeological studies began in the area in 1936 and continued in the 1960s. Beyond a rich collection of ancient and medieval artifacts and the ruins of various buildings and structures, unique remains of prehistoric animals and humans have been unearthed. Some of the animal bones were identified by the Georgian paleontologist A. Vekua with the teeth of the extinct rhino
Dicerorhinus etruscus etruscus in 1983. This species dates back presumably to the early
Pleistocene epoch.
The discovery of primitive stone tools in 1984 led to increasing interest to the archaeological site. In 1991, a team of Georgian scholars was joined by the
German archaeologists from Römisch-Germanisches Zentralmuseum, and later the
U.S.,
French and
Spanish researchers.
Early human fossils, dubbed
Homo georgicus, were found at Dmanisi between 1991 and 2005. At 1.8 million years old,
H. georgicus may have been a separate species of
Homo, predating
Homo erectus, and represent the earliest stage of human presence in the Caucasus.
Subsequently, four fossil skeletons were found, showing a species primitive in its skull and upper body but with relatively advanced spines and lower limbs. They are now thought not to be a separate species, but to represent a stage soon after the transition between
Australopithecus and
Homo erectus, and have been dated at 1.8 million years.