Senomoto Kogen Plateau

Senomoto Kogen Plateau is a high-altitude grassland located in Kumamoto Prefecture on the island of Kyushu, stretching across the northern slopes of Mount Aso, one of the world's largest active volcanic calderas. The plateau sits at approximately 900 meters above sea level and covers an expansive area of rolling hills that have been shaped by centuries of volcanic activity and traditional land management practices.

The landscape owes its distinctive character to the ancient practice of noyaki, or controlled burning, conducted annually each spring to maintain the health of the grasslands and prevent forest encroachment. This tradition, carried out by local farmers for over 1,000 years, has created one of Japan's most significant semi-natural grassland ecosystems. The plateau supports diverse flora and fauna adapted to this unique volcanic environment, including various species of wildflowers that bloom throughout the warmer months and grazing livestock that contribute to the area's pastoral atmosphere.

Visitors come primarily to experience the sweeping panoramic views across the Aso caldera and surrounding volcanic peaks, particularly the sight of Mount Nakadake's active crater in the distance. The plateau transforms dramatically with the seasons: fresh green meadows emerge in spring following the controlled burns, summer brings wildflowers and ideal conditions for hiking, autumn paints the landscape in golden hues, and winter occasionally delivers light snow cover. The Senomoto Visitor Center provides educational exhibits about the volcanic geology, local ecology, and cultural practices of the region.

The plateau is accessible by car via the Yamanami Highway, a scenic route connecting Kumamoto and Oita prefectures that passes directly through the area. The drive from Aso Station takes approximately 30 minutes. Public buses operate along this route but with limited frequency, making private transportation more practical for most visitors. There is no admission fee to access the plateau itself, though parking fees may apply at designated lots near the visitor center.