Mountain Day (Yama no Hi)

What Is Mountain Day?

August 11th is "Mountain Day." Established in 2014 and observed as a national holiday since 2016, it was Japan's first holiday dedicated specifically to mountains, with the purpose of "providing opportunities to connect with mountains and appreciate the benefits they provide." The date August 11th has no special mountain-related origin. It is said to have been chosen because it makes it easy to connect the holiday with the Obon break. August 12th was reportedly considered at first, but was avoided because it is the anniversary of the 1985 Japan Air Lines crash.

Why Was Mountain Day Created?

About 70% of Japan's land area is mountainous, and mountains have long played a deep role in the country's culture, daily life, religion, and industry. Calls of "if there is a Marine Day, there should be a Mountain Day" led mountaineering organizations, including the Japanese Alpine Club, to campaign for the holiday. With it, Japan came to have 16 national holidays a year, and August gained its first national holiday.

• Japan's geography: Mountains make up about 61% of Japan's land area and hills about 12%, for a combined total of roughly 70% (about 73%).
• Mountain culture: Mountain worship, the ascetic tradition of Shugendo, and satoyama (village-adjacent woodland) culture all form a foundation of Japanese culture.
• Living alongside nature: Mountains play vital roles in water source conservation, forest resources, and climate regulation — all essential to daily life.

The History and Culture of Japan's Mountains

Since ancient times, mountains have been considered dwelling places of the gods, central to both daily life and spiritual practice.

• Mountain worship: Mount Fuji, Mount Hakusan, and Mount Tateyama are known as Japan's "Three Sacred Mountains" and have long been objects of religious devotion.
• The development of Shugendo: Shugendo, a uniquely Japanese religious tradition that uses mountains as a place of ascetic practice, is said to trace back to En no Ozunu in the 7th century.
• The spread of mountaineering culture: In modern times, mountain climbing developed into a sport, and today it's enjoyed as a popular leisure activity by people of all ages.

The Science and Natural Mechanisms Hidden in Mountains

Mountains are also fascinating subjects across many scientific fields, from geology to meteorology to ecology.

• How mountains form: The mountains of the Japanese archipelago were shaped by tectonic plate collisions and volcanic activity.
• Climate and altitude: Air temperature is said to drop by roughly 0.6°C for every 100-meter increase in elevation.
• Ecological diversity: Different vegetation zones exist at different elevations, creating a precious environment where a wide variety of organisms coexist.

Interesting Facts About Mountain Day

• Japan's tallest mountain: Mount Fuji, at 3,776 meters, is Japan's highest peak. Second is Mount Kitadake (3,193 m) in the Southern Alps.
• Japan's lowest mountain: Among mountains shown on the Geospatial Information Authority of Japan's maps, Hiyoriyama in Sendai, confirmed at 3 meters in 2014, is considered the lowest in Japan. Tempozan in Osaka (4.53 m), previously called the lowest, is now the second lowest.
• Years the holiday moved: for the Tokyo Olympics and Paralympics, it was moved as a special exception to August 10th in 2020 and August 8th in 2021.
• The meaning behind mountain names: Names ending in "-dake," "-yama," or "-mine" often reflect a mountain's terrain or its religious significance.
• Mountains as the source of water: Many of Japan's rivers originate in the mountains, supplying water for daily life and agriculture.

Tips for Enjoying Mountain Day

• Take a walk in a nearby mountain or nature park and enjoy the seasonal plants and scenery.
• Learn about Japan's mountain worship traditions and history to connect with the cultural background.
• Brush up on the basics of hiking — gear, weather, and safety — and learn how to engage with nature responsibly.
• Browse photo books or documentaries about mountains to enjoy their beauty visually.

Mountains Quietly Support Our Lives

Mountain Day on August 11th is a chance to remember that we are part of nature's grand cycle. By connecting with mountains and appreciating what they offer, everyday scenery can take on a richer meaning. Let the stillness and grandeur of the mountains settle your mind for a day.