
Guida
Mount Heiji is a 1,643m stratovolcano located on the border between Taketa City and Kusu District in Oita Prefecture. Situated on the eastern side of the Kuju mountain range, it is characterized by its distinctive two peaks. The area is part of the Aso-Kuju National Park, ensuring a beautifully preserved natural environment. The most spectacular sight occurs in early summer, when vast colonies of Miyama-kirishima azaleas turn the mountain slopes a brilliant pinkish-red.
The Kuju volcanic group, including Mount Heiji, was formed through intense volcanic activity, creating the unique terrain seen today. This region is also a geothermal zone, where volcanic heat is utilized for geothermal power generation. Historically, the local culture has been deeply intertwined with the surrounding mountains and the coexistence with nature. The name of the mountain itself is warmly associated with local lore and the history of the people living in the shadow of these great peaks.

The greatest draw of Mount Heiji is its incredible diversity of alpine flora. In early summer, the Miyama-kirishima azaleas decorate the slopes in a sea of color. Other notable plants include Iwakagami (Japanese primrose), Tsukushi-shakunage, Tsukushi-dodan, Komorebi (wax currant), Matsumushiso, and Gentian. These plants offer a different aesthetic with every season, serving as symbols of the mountain's natural beauty. Additionally, the rugged topography of the stratovolcano provides a fascinating landscape for hikers and photographers.
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 pink-tinted mountainsides. Because weather conditions can change rapidly in high-altitude environments, checking the forecast before your climb is essential. The bright daylight hours are ideal for observing the delicate textures of the alpine vegetation and the surrounding scenery.

Hiking is the primary activity around Mount Heiji. Well-maintained trails start from areas such as Chojabaru or Makino-to Pass, allowing you to immerse yourself in the wilderness. A unique cultural experience in this area is the ability to enjoy the "Kuju Mountain Hot Spring Village" after your hike. Many travelers enjoy relaxing in the nearby hot springs to soothe their muscles. Some hot spring facilities, such as Hokoin Onsen, may require a walk from the trailhead.
The area surrounding Mount Heiji is filled with natural wonders. To the north lies the Iida Highland and to the south is the Kuju Highland, both known for their vast, rolling grasslands. Other famous peaks within Aso-Kuju National Park, such as Mount Obuna, Mount Kuro, and Mount Kuju, are also nearby. The "Yamanami Highway" runs through the vicinity, making it a popular route for scenic drives and motorcycle touring.
Proper hiking boots and layered clothing are mandatory for a safe ascent. Since mountain weather is highly unpredictable, we recommend bringing windbreakers and extra layers. Please be aware that certain areas may be restricted due to volcanic fumes; always follow local signage and instructions. While most hiking is free, having Japanese Yen (cash) is recommended for local transportation or nearby facilities. Please carry all your trash back with you to help preserve this precious natural environment.