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Koganei Ichiri-duka(Earthen Distance Markers)

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Cultural Resources Category Histric Sites, Places of Scenic Beauty
Cultural Properties Category National Designation Histric Sites
Title Koganei Ichiri-duka(Earthen Distance Markers)
Designation Date 1922/03/08
Cities / Towns Shimotsuke
Owner / Manager Shimotsuke City
Description Koganei Ichiriduka was built along the Nikko Kaido, one of the five highways of the Edo period (1603-1868), and is located 22 ri (about 90 km) from Nihonbashi in Edo (Tokyo). Ichiriduka were mounds built nationwide on both sides of the highway to mark every 1 ri (approx. 4 km), and were constructed in a square of 5 ken (approx. 9 m).

 It was in 1604 that the Edo shogunate began construction of the Five Routes, and from then until 1884, when National Route 4 opened, this Nikko Kaido served as the main road to the Tohoku region.

 Koganei Ichirizuka has been exposed to wind and rain for many years and has lost its shape and become circular, but a survey revealed that it was square at the time it was built, measuring approximately 12 meters on each side. During excavations in 1997, a gravel road and its side ditches were discovered along the old Nikko Kaido, and 50 pieces of Kan'ei Tsuho and fragments of ceramics (tea bowls, etc.) were found tied to a string.

 Today, two mounds are located just west of Route 4 as a historic site pocket plaza. Several generations of large enoki trees stand tall on the mounds, providing cool shade for passersby in summer.
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