While Trialetian industry developed in steppe riparian and mountain ecozones, as for example in the Khrami river and the mountainous site of Chokh respectively, the Caspian Mesolithic took place in a transitional ecotone between the sea (Caspian Sea), plain and mountains (Alborz mountain range). The Caspian Mesolithic hunter-gatherers were adapted to the exploitation of marine resources and had access to high quality raw material, whereas in the Trialetian sites as Chokh and Trialeti there is imported raw material from distances of 100 km.