Shikoku Karst is one of Three Major Karst in Japan. The average altitude is 1,400m from the sea level and goes 25km long. It consists Onogahara, Mezurudaira, Godankogen and Tengukogen. In Summer it's covered grass, and in Autumn Japanese pampas grass.
The field has limestone rocks. It is very unique and beautiful scenery of Shikoku Mountains.