One of the city's main ports was at the mouth of the Inari-gawa (Inari River), in or near Kanmachi. However, beginning in [[1840]], sand and soil was dredged from the bottom of the Inari in order to build up an artificial area of land which came to be known as Gionnosu; numerous coastal defense batteries were installed there in the 1850s-1860s.<ref name=kanmachi/> | One of the city's main ports was at the mouth of the Inari-gawa (Inari River), in or near Kanmachi. However, beginning in [[1840]], sand and soil was dredged from the bottom of the Inari in order to build up an artificial area of land which came to be known as Gionnosu; numerous coastal defense batteries were installed there in the 1850s-1860s.<ref name=kanmachi/> |