Fig1: Locality of Major obsidian sources of Stone Age Japan after Cultural Properties Laboratory (2011).
Fig.2. Distribution of Paleolithc and Jomon sites, and geologic source of obsidian in Central Highlands (A), Nagano Prefecture, and Hiroppara wetland area (B). Inset showing the locality of Central Highlands in Japan. The COLS has conducted archaeological and palaeoenvironmental research for the Hiroppara wetland (A) and prehistoric sites in its surroundings (B)