Iwami Plateau

plateau, Japan

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June 29, 2026

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The Iwami Plateau is a landform within the Chūgoku Range in western Honshu, Japan. It is narrower and more dissected than the Kibi Plateau, another landform within the same range. An exception is the Akiyoshi Plateau area in the west, which exhibits karst topography in some locations. The Iwami Plateau is characterized by numerous semicircular depressions that have been filled by lava-dome volcanoes, including Mount Dai, which reaches an elevation of 5,673 feet (1,729 meters) in Tottori prefecture.1

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Chūgoku Range
The Iwami Plateau, lying to the north of the Backbone Range, is narrower and more dissected than the Kibi Plateau, except in the Akiyoshi Plateau area in the west, where karst topography occurs in some places. Numerous semicircular depressions have been buried by lava-dome volcanoes, including…
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The Iwami Plateau, lying to the north of the Backbone Range, is narrower and more dissected than the Kibi Plateau, except in the Akiyoshi Plateau area in the west, where karst topography occurs in some places. Numerous semicircular depressions have been buried by lava-dome volcanoes, including…
Read More