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Studies of trade routes across Southeast Asia in prehistory have hitherto focused largely on archaeological evidence from Mainland Southeast Asia, particularly the Thai Peninsula and Vietnam. The role of Indonesia and Island Southeast Asia in these networks has been poorly understood, owing to the paucity of evidence from this region. Recent research has begun to fill this void. New excavations at Sembiran and Pacung on the northern coast of Bali have produced new, direct AMS dates from burials, and analytical data from cultural materials including pottery, glass, bronze, gold andsemi-precious stone, as well as evidence of local bronze-casting. This suggests strong links with the Indian subcontinent and Mainland Southeast Asia from the late first millennium BC, some 200 years earlier than previously thought.

International audience; The volcanic Javaketi Range (Lesser Caucasus, Georgia) has recently aroused the interest of both geologists and archaeologists on account of its rich environmental and geological history, the prehistoric exploitation of its raw materials and the discovery of archaeological sites ranging from the Palaeolithic to the Historical Ages (Gogadze 1980; Kikodze 1983). In 2012 and 2014, two systematic surveys were conducted on Mount Chikiani (Koyundağ) with the aim of defining the areas from which obsidian was obtained during different prehistoric periods, and to characterise its sources (Biagi & Gratuze 2016). A longer season of archaeological prospection was carried out in 2016. Among the many important finds was the discovery of a large number of obsidian mining pits along the northern and north-eastern lower slopes of the volcano (Figure 1), as well as several obsidian workshops. During the 2016 season, research focused on the 2417m-high trachyrhyolitic dome—a source of high-quality obsidian—emerging from the plain around 300m north-east of Lake Paravani.