The Tobu Kumagaya Line was a 10.1 km single-track line operated by Tobu Railway, which ran from Kumagaya to Menuma in Saitama Prefecture between 1943 and 1983.
Wikipedia https://en.wikipedia.org/wiki/Tobu_Kumagaya_Line
Address Japan
Coordinates 36°14'21.823" N 139°23'15.8" E