Excavations at the Nor Geghi 1 site in 2008. The archaeological artefacts are in the black band (a fossilised soil) visible above the red bucket, the yellow layers are floodplain deposits and the rock at the top of the section is basalt (solidified lava). (Picture © Keith Wilkinson)
Working with an international research team, the researchers analysed the remains of sharp chipping tools found in two lava flows in a 325,000-year-old site in Armenia. They found evidence of the Levallois technique in this site, and showed that the people there had developed it themselves.