Atetsu Dai

Atetsu Dai forms part of the Akiyoshi-dai Karst Plateau and features exposed limestone formations spread across a wide mountainous area. The landscape shows bare rock surfaces, natural cave openings, and distinct geological structures that shape the terrain throughout the central and eastern zones.

The Agency for Cultural Affairs designated this site as a protected natural monument, acknowledging its geological significance in Japan's conservation system. This official recognition ensures the landscape remains safeguarded for future generations.

The eastern section hosts an annual mountain burning ceremony held on the third Sunday of February, carried out by locals to maintain the grasslands. This practice reveals how communities have shaped and cared for this land over time.

The site is accessible through established pathways that guide visitors safely across the geological formations. Plan your visit during drier months when the trails are easiest to walk.

The cave system contains varied geological structures that together form Japan's largest karst plain. These formations developed over millions of years as water slowly dissolved the limestone.