[6] In contrast, recent excavations in the Valley of Qvirila river, to the north of the Trialetian region, display a Mesolithic culture.
[citation needed] The subsistence of these groups were based on hunting Capra caucasica, wild boar and brown bear.
[12][13][14] The lithic industry of the three phases show similarities such as the predominance of microliths, small cores and obsidian as raw material.
[12][14] The backed an scalene bladelets are the dominant type of microlith; these tools show similarities with those of the Late Upper Paleolithic of Kalavan-1 and the Mesolithic layer B of the Kotias Klde.
Though Apnagyugh-8 industry shows some similarities with Zarzian and Trialeti cultures, analytic studies for proving this comparison are still in the process.Layer III of Kmlo-2 contained the so-called “Kmlo tools”.
[16] It has been suggested that the Kmlo tools are distinctive features of a culture established circa 9-8k cal BC on the highlands of western Armenia and continued at least until the 6th-5th millennia calBC.
In the southwest corner of the Trialetian region it has been proposed[9] that this culture evolved towards a local version of the PPNB around 7k BC, in sites as Cafer Höyük.
The genome of a Mesolithic hunter-gatherer individual found at the layer A2 of the Kotias Klde rock shelter in Georgia (labeled KK1), dating from 9,700 BP, has been analysed.