Tonomine Highlands, Table land in Kamikawa, Hyogo, Japan.

Tonomine Highlands is a roughly 90-hectare grassland at 800–900 m in Kamikawa, Hyogo Prefecture, within the Hyonosen-Mineyama Prefectural Natural Park. Its gently undulating surface is a fossil periglacial slope, and in autumn the Japanese pampas grass turns the whole slope silver. A wetland area within the plateau holds alpine plants.

Before the modern era, the plateau was mown for thatch grass used in thatched roofs. Annual burning at snowmelt kept the grassland open, producing the large pampas grass field. Burning continues every April to maintain the grass, though the 2015 burn was cancelled after a fire on 28 March, and the 2018 burn was cancelled after a worker died following the 2017 burn.

The highlands serve as a gathering place where people come together for moon-viewing celebrations in September and participate in the pampas grass festival in October. These seasonal events connect visitors to traditions that have become part of the local rhythm throughout the year.

The best time to visit is from April through November when the grass is actively growing and visible in different heights and colors. A visitor center at the site provides information and facilities to help you explore the area comfortably.

In autumn the pampas grass takes on silver tones that catch and reflect sunlight across the hillsides, creating a shimmering effect visible from different angles. This natural light display is especially striking during early morning and late afternoon hours.