
Guide
Mount Heijidake is a 1,643m stratovolcano situated on the border between Taketa City and Kuju Town, Oita Prefecture. Located on the eastern side of the Kuju Mountains, the mountain is characterized by its two distinct peaks. This area is part of the Aso-Kuju National Park, ensuring a well-preserved and rich natural environment. A particularly spectacular sight occurs in early summer, when vast clusters of Miyama Kirishima azaleas turn the mountain slopes a brilliant pinkish-red.
The Kuju volcanic group, which includes Mount Heijidake, was formed through intense volcanic activity, resulting in the unique landscape seen today. The region is also a geothermal area, utilizing volcanic energy for geothermal power generation. Historically, the local culture has been deeply intertwined with the mountain's foothills, fostering a long history of coexistence with nature. The name itself is affectionately linked to local lore and the deep connection between the community and the surrounding landscape.

The greatest draw of Mount Heijidake is its incredible diversity of alpine flora. In early summer, the Miyama Kirishima azaleas paint the mountainside in vivid colors. Visitors can also discover a wide variety of other plants such as Iwakagami (Primulina), Tsukushi Shakunage (Rhododendron), Tsukushi Dodan, Komoretti (Kinnikinn), Gentian, and Gentianella. These plants represent the changing faces of the mountain through the seasons. Additionally, the rugged topography of the stratovolcano provides a dramatic backdrop for hikers and photographers alike.
The best time to visit is from May through early summer. This period coincides with the blooming of the Miyama Kirishima, offering the unique spectacle of red-tinted slopes. Because weather conditions in the mountains can change rapidly, it is crucial to check the forecast before your ascent. The bright daylight hours are ideal for observing the intricate details of the vegetation and alpine plants.

Hiking is the primary activity around Mount Heijidake. Well-maintained trails start from areas like Chojabaru or Makino-to Pass, allowing you to immerse yourself in the wilderness. A wonderful way to complete your experience is to visit the nearby Kuju Onsenkyo (Hot Spring Village). Relaxing in a hot spring after a long hike is a quintessential part of the local culture. Some hot spring areas, such as Hokkein Onsen, may require a walk to reach from the trail.
The area surrounding Mount Heijidake is filled with natural wonders. To the north lies the Iida Highland and to the south is the Kuju Highland, both famous for their vast, sweeping grasslands. Other famous peaks within Aso-Kuju National Park, such as Mount Obuna, Mount Kuro, and Mount Kuju, are also nearby. The scenic "Yamanami Highway" runs through the region, making it a popular route for driving and motorcycle touring.