Nanbu-Date border mounds

The Nanbu-Date Border Mounds (, Nanburyō-Dateryō Sakaizuka) are a series of earth mounds constructed in the early Edo period to mark the border between the feudal domains of Morioka Domain (i.e. “Nanbu territory”) and Sendai Domain (i.e. i.e. “Date territory”) in Mutsu Province of northern Japan. Such boundary markers were common under the Tokugawa shogunate which ruled from 1602 to 1865; however, the number of markers and their excellent state of preservation led the grouping in the modern municipalities of Kitakami and Kanegasaki in Iwate Prefecture to be designated a National Historic Site. on January 31, 2000.

Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).