Kamyana Mohyla is an archaeological site in the Molochna River valley, about a mile from the village of Terpinnya, Zaporizhia Oblast, Ukraine. Petroglyphs of Kamyana Mohyla are dated from Upper Paleolithic to Medieval, with Stone Age depictions subjected to most archaeological interest. The site encompasses a group of isolated blocks of sandstone, up to twelve meters in height, scattered around an area of some 3,000 square meters. As Noghai legend has it, it resulted from a scuffle of two baghaturs who took turns throwing rocks at each other. In truth, the site had its origins in a sandbank of the Tethys Ocean. For a long time it was an island in the Molochna River, which has since been silted up and now flows a short distance to the west. It is thought to represent the only sandstone outcrop in the Azov-Kuban Depression. The shape of this sand hill is similar to that of kurgans that dot the Pontic-Caspian steppe. In 1889, the Russian archaeologistNikolay Veselovsky was called upon to explore the enigmatic site and started excavations the following year. As soon as he concluded that the site was a burial mound, excavations were terminated. There was very little scientific exploration of the site during the first third of the 20th century. In the 1930s the site was investigated by a team of scholars from Melitopol under Valentin Danylenko. The young archaeologist claimed to have discovered thirty caves with petroglyph inscriptions which he dated from the 20th century BC to the 17th century AD. Danylenko resumed his work on the site after World War II and claimed to have discovered thirteen additional caves with petroglyphs. The site was designated an archaeological preserve in 1954. The move was intended to prevent the area from being flooded after construction of a water reservoir. During the following decades, the condition of petroglyphs visibly deteriorated. Petroglyphs are found only inside the caves and grottoes of Kamenna Mohyla, many of them still filled up with sand. No adequate protection from the elements has been provided to this day. No traces of ancient human settlement have been discovered in the vicinity, leading many scholars to believe that the hill served as a remote sanctuary. Faint traces of red paint remain on parts of the surface. Scholars have been unable to agree whether the petroglyphs date from Mesolithic or Neolithic. The latter dating is more popular, although the presumed depiction of a mammoth in one of the caves seems to favour the former date. In 2006, the government of Ukraine nominated the site for inscription on the World Heritage List. On the whole, the Stone Tomb images represent traces of religious exercises of the hunters and cattle-breeders of this steppe zone of southeast Europe from the 20th century BC to the 17th century AD. Some caves are of artificial origin; their cultural strata have been fixed as the Neolithic, Bronze and Early Iron Ages as well as of Middle Ages. Danylenko's magnum opus about the site was released posthumously, but it took the publication of Anatoly Kifishin's hefty monograph in 2001 to attract wider attention to Kamenna Mohyla. In this controversial work, Kifishin compared the petroglyphs of Kamenna Mohyla to those of Çatalhöyük and concluded that both were related to the Sumerian cuneiform script. Shortly before his death, Igor Diakonov lashed out against Kifishin's hypothesis.