sentences:  It was found to have a close relationship to both "Mal'ta boy" (24 ka) of south-east Siberia (Ancient North Eurasian) and to the later Mesolithic hunter-gatherers of Europe and western Siberia, as well as with a basal population ancestral to Early European Farmers, but not to East Asians.A layer of Campanian volcanic ash from about 45,000 years ago has been found above some of the finds, showing that humans inhabited the site before this.The Campanian Ignimbrite eruption of the Phlegraean Fields volcano occurred about 39 kya.