Stories of Kyushu, Japan

Kyushu’s People and Way of Life, Shared with the World

Vol. 4 | The Earth Shakes, The Myth Lives On The Profound Secret of Aso

The Day the Earth Shook: A Story of Coexistence in Aso

On July 28, 2026, ten years after the devastating Kumamoto earthquakes, the earth beneath Kyushu shook significantly once again. Coincidentally, this was the very day of the Onda-matsuri (Onda Festival) at Aso Shrine—a sacred, centuries-old ritual to pray for a bountiful harvest and express profound gratitude to the deities of nature. While earthquakes are often viewed by the world merely as natural disasters, in Aso, they hold a much deeper meaning. In fact, the very reason human life thrives inside this massive caldera, and the reason the majestic Aso Shrine exists today, is due to catastrophic earthquakes.

A Living Scroll of Mystical Nature Worship

To witness the Onda Festival is to step into a realm of deep, mystical animism unique to the East. The procession unfolds across the lush summer fields like a living ancient scroll. Women known as Unari, clad entirely in pristine white garments, walk with a quiet grace, balancing sacred meals for the deities on their heads. The humid air resonates with the rhythmic, haunting chants of the Onda-uta (sacred agricultural songs), echoing against the volcanic peaks. In a unique and profound expression of nature worship, rather than planting seeds, the participants toss fully grown, vibrant green rice plants at the passing Mikoshi (portable shrines). It is a mesmerizing communion—a tangible moment where the raw spirits of the volcano, the blessings of the earth, and human devotion seamlessly intertwine.

The Geological Truth Behind the Myth

Until about 10,000 years ago, the vast Aso Caldera was a giant, unlivable lake. How did this lake transform into the beautiful, fertile land we see today? According to ancient Japanese mythology, a great deity named Takeiwatatsu-no-Mikoto kicked and shattered the caldera wall to drain the water, creating land for agriculture. However, the awe-inspiring geological truth is that it was a series of massive earthquakes —repeating from the caldera's formation 90,000 years ago until 10,000 years ago—that finally fractured the western wall, creating the Tateno Gorge. In a very real sense, it was the earthquakes that "kicked open" the caldera wall. The destruction brought by tectonic shifts gave birth to the very ground the people of Aso walk on, blessing them with incredibly fertile volcanic soil and pristine spring water.

Authenticity and Resilience

This is the true essence of nature worship and volcano belief in Aso. The people here do not just survive alongside the volcano; they embrace its dual nature—its terrifying, earthshattering power, and its immense life-giving blessings. The Onda Festival is not a mere cultural performance for tourists; it is a profound, living testament to human resilience and a deep-rooted philosophy of coexisting with the earth's rawest forces.

A Message to Travel Designers

Today’s luxury travelers are seeking more than just picturesque landscapes. They yearn for "Authentic Travel" and transformative experiences that touch their souls. Aso offers exactly this. We invite you to design journeys that go beyond the surface. Bring your discerning clients to Kyushu, where they can stand inside one of the world's largest calderas, feel the heartbeat of the living earth, and witness a proud community that has thrived in harmony with volcanoes and earthquakes for millennia.