Obsidian arrowheads and other Jomon archaeology

Jomon is the name given to Japan's prehistoric "stone age" period, thought to be from 30,000 to 2,500 years ago.  The name means "rope marks" and derives from the markings on the pottery of the period.  During this period the people of the archipelago went from simple hunter-gatherers to being users of tools, the beginnings … Continue reading Obsidian arrowheads and other Jomon archaeology

Water, rocks and devils: the geological impact of an active volcano

Mt. Asama, on the border of Nagano and Gunma prefectures, is one of Japan's many active volcanoes and the most active one on Honshu island.  Yet it is usually relatively approachable and some interesting sights nearby testify to its geological impact.  Two of those are Shiraito Falls and Onioshidashi Park. Just a 25 minute bus … Continue reading Water, rocks and devils: the geological impact of an active volcano