 The southern part contains the northern end of the Chikushi Plains (part of the Saga Plains), and north of the Nagasaki Expressway is the southern end of the Sefuri Mountains.In 1986, the remains of a Yayoi period moat-encircled village were discovered on Yoshinogari Hill at the site of a planned factory housing complex.The area was named the Yoshinogari site and the town name originates from here.