Cultural layers 7 and 8 represent deposits with normal polarity. Cultural layers 11 and 12 possibly refer to the Jaramillo normal polarity episode of the Matuyama period, i.e. possibly about 1 Ma BP. This is the evidence of the northward migration and indicates a fairly high adaptive ability of early hominids.
The Eurasian sites correlated with the first migration wave have yielded cores with a minor preparation and retaining pebble surfaces on the striking platforms characterizing primary stone reduction. The tool kit includes micro- and macrochoppers, chopping tools, nosed tools, pebble scrapers, backed knifes and other tool types. This pebble industry is typologically close to the Oldowan industry.
