Books in this category
今津元寇防塁発掘調査概報 - The Imazu Mongol Fortification Excavation Investigation: Second Survey (1968) of Stone Barriers in Response to the Mongol Invasion in the Kamakura Period (13th Century)
In the C13th the Kamakura Shogunate constructed a 20km rock bulwark to thwart Mongol invasions from the West. The Imazu section still stands and is designated a National Historic Monument.
