Akiyoshiday Quasi National Park has an area of 45.02 km². It includes part of the Akiyoshi plateau, an area of Karts topography and about 400 limestone caves.

Japan 1959, Akiyoshiday Quasi National Park.

Japan 2015
The stamp depicts karst pinaccles in Akiyoshiday Quasi National Park. The summit in the far background is known as Eboushi-dake (394.5 m). Below is depicted the historical wooden arch bridge "Kintai Bridge" in the city of Iwakuni.

note:
The Kintai Bridge, also known as Brocade Bridge, is also depicted in the series "Famous Views of the 60 odd Provinces" (Picture No 51,Utagawa Hiroshige)

The stamp was issued in the series "60th Anniversary Series of the Enforcement of the Local Autonomy Yamaguchi Prefecture".