Nojima Fault: A Living Geological Record of Japan's 1995 Great Earthquake
At 5:46 a.m. on January 17, 1995, a magnitude 7.3 earthquake struck the Hanshin-Awaji region of western Japan, claiming more than six thousand lives and changing the country's relationship with seismic risk forever. Most physical traces of that disaster have long since been rebuilt over — but on the northwestern shore of Awaji Island, you can still walk alongside the very crack in the earth that started it all. The Nojima Fault, designated a National Natural Monument in 1998, is preserved exactly as it appeared the morning of the quake, sheltered beneath a vast dome that stretches for 140 meters across the original countryside. It is one of the most powerful encounters with the planet's living geology that any traveler can have.
What Is the Nojima Fault?
The Nojima Fault is an active fault running across the northwestern part of Awaji Island, in the city of Awaji, Hyogo Prefecture. It forms part of a much larger structural feature known as the Rokko–Awaji Island Fault Zone, which stretches from the Rokko mountains north of Kobe down through the island. When the fault ruptured in the predawn hours of January 17, 1995, it triggered the South Hyogo Prefecture Earthquake — the seismic event that caused the disaster the world remembers as the Great Hanshin-Awaji Earthquake.
The Day the Earth Shifted
The rupture pushed a visible crack to the surface for roughly nine to ten kilometers along the island's spine, from near the Esaki Lighthouse in the north down to the Tomishima district. In the worst-affected zone near Hirabayashi, the ground was wrenched horizontally by up to 2.1 meters and uplifted vertically by as much as 1.2 meters along a 150-meter stretch. This is geologically known as a reverse fault with a right-lateral strike-slip component — the southeastern side rose and slid southwestward against the other.
A Rare Surface Witness
Most major earthquakes in Japan originate offshore, beneath the Pacific Ocean, so a clear, walk-up surface rupture from a destructive quake is exceptionally rare. The Nojima Fault offered scientists, and now ordinary visitors, an extraordinary chance to see how a continental crust can tear itself apart in seconds — and to understand the specific kind of fault movement that powered one of postwar Japan's deadliest disasters.
Why It Was Designated a National Natural Monument
Recognizing the irreplaceable scientific and educational value of what had been exposed in Awaji, the Japanese government moved quickly. On July 31, 1998 — only three years after the earthquake — a 185-meter section of the fault in the Ogura district of the former town of Hokudan (now Awaji City) was designated a National Natural Monument under the Law for the Protection of Cultural Properties.
Reasons for the Designation
The designation recognizes the Nojima Fault as a uniquely important physical record of an active fault rupture beneath a populous region. Inside the protected zone, the southeastern side has risen by 0.2 to 0.5 meters and shifted right-laterally by 0.7 to 1.5 meters. Visitors can clearly observe parallel main and subsidiary fault strands, displaced rice-paddy ridges, broken irrigation channels, an offset shrine hedge, and ruptured road pavement. Even more rarely, the site preserves echelon cracks arranged in a reverse-Z pattern and small depressions formed by the lateral motion — geomorphological features that almost never survive intact.
A Place to Understand Japan's Seismic Reality
Japan sits atop one of the most seismically active zones on Earth, with roughly 2,000 known faults beneath its land and surrounding waters. Of these, 114 are designated as principal active fault zones. The Nojima Fault, frozen in the moment of its violent slip, allows residents and visitors alike to understand — viscerally rather than abstractly — what these otherwise invisible structures can do.
Highlights of a Visit
The Nojima Fault is the centerpiece of the Hokudan Earthquake Memorial Park, an open-air complex that combines a preservation hall, an experience center, a memorial house, and surrounding lawns and monuments. Allow at least an hour, more if you wish to linger.
The Fault Preservation Hall
The hall is the world's only preservation building constructed directly atop a major surface rupture. As you walk along the 140-meter timber path that follows the fault, you can see broken farm features, twisted hedges, and the offset earthen ridge of an old rice paddy still in their original positions. A trench dug across the fault lets you observe its three-dimensional structure underground.
The Memorial House
A private home that stood directly on the fault line has been preserved exactly as it appeared on the morning of the quake. The kitchen interior, scattered with fallen objects, and a clock stopped at 5:46 a.m. offer an intimate, deeply human counterpoint to the geological story outside.
The Earthquake Experience Hall
Here visitors can feel a simulated tremor of magnitude-7 intensity inside a reconstructed kitchen, accompanied by the actual television news broadcasts from the morning of January 17. The experience is brief but unforgettable, and serves as a reminder of how quickly an ordinary morning can change.
The Wall of Kobe
Outside the preservation hall stands a remarkable concrete structure known as the Wall of Kobe. It served as a fire-prevention wall in a public market in Kobe's Nagata Ward and survived the wartime air raids of 1945 as well as the fires that swept the neighborhood in 1995. Relocated to the park, it now stands as a quiet symbol of urban resilience.
Storyteller Volunteers
On certain days, volunteers who lived through the 1995 disaster share their personal recollections in Japanese. Even without translation, the dignity of their testimony adds a layer of meaning to the visit that no display panel can match.
Around the Park
The northwestern coast of Awaji Island offers more than the memorial park. Within easy reach you will find:
- The Akashi Kaikyō Bridge, the world's longest suspension bridge by main-span length until 2022, visible from the park grounds and a short drive away
- Esaki Lighthouse, a Meiji-era brick lighthouse at the northernmost tip of the island, designed by the British engineer Richard Henry Brunton
- Awajishima Kokenshōkō Sōgō Center and various local product shops featuring Awaji's famous onions, sea bream, and noodles
- The cherry-blossom park of Hokudan Yumebutai, a Tadao Andō architectural complex about 20 minutes away by car
- Coastal viewpoints along the Akashi Strait, ideal for sunset photographs over the Inland Sea
- 📍 Plan Your Visit to Hyogo
- Find tours, activities & transport passes near Nojima Fault
- [ Himeji Castle & Kobe Night View Cruise ]
Q&A
- Is the actual fault really the same one that caused the 1995 earthquake?
- Yes. The 185-meter section preserved inside the dome is the original ground rupture from the South Hyogo Prefecture Earthquake of January 17, 1995, conserved in place exactly as it appeared that morning. It has been protected under cover since shortly after the disaster.
- How do I get to the Hokudan Earthquake Memorial Park from Kobe or Osaka?
- By car, take the Kobe-Awaji-Naruto Expressway, cross the Akashi Kaikyō Bridge, and exit at Hokudan IC; the park is about 10 minutes away. By public transport, take a highway bus from Sannomiya in Kobe across the bridge and transfer to a local "Awashin Awahime" community bus to the Shinsai Kinen Kōen-shisetsumae stop. The total journey from central Kobe is roughly 90 minutes.
- Is there enough English information for foreign visitors?
- Major exhibits include English signage and panel summaries, and a multilingual leaflet is available at the entrance. Audio commentary and most volunteer talks are in Japanese, so a translation app on your phone may enhance the more detailed displays.
- When is the best time of year to visit?
- The site is open year-round except for a short closure in late December. Spring and autumn offer the most comfortable weather for walking the outdoor sections of the park, while January 17 each year holds memorial events of particular emotional significance.
- Is the site appropriate for children or sensitive visitors?
- Most exhibits are educational rather than graphic, and many children visit on school trips. The earthquake simulator can be intense; visitors with heart conditions, pregnant guests, or very young children may wish to skip that particular exhibit. The fault itself, the memorial house, and the outdoor park areas are accessible to all.
Basic Information
| Name | Nojima Fault (野島断層) |
|---|---|
| Designation | National Natural Monument (designated July 31, 1998) |
| Preserved Length | Approximately 185 meters (within the 140-meter preservation hall) |
| Total Surface Rupture | Approximately 9–10 kilometers along Awaji Island |
| Maximum Displacement | Up to 2.1 m horizontal (right-lateral) and 1.2 m vertical |
| Location | Ogura, Awaji City, Hyogo Prefecture, Japan |
| Facility | Hokudan Earthquake Memorial Park / Nojima Fault Preservation Hall |
| Hours | 9:00–17:00 (last entry usually 16:30); generally open every day from January through November, with short closures in late December |
| Admission | Adults ¥730 / Middle and high school students ¥310 / Elementary students ¥260 (group discounts for 30 or more) |
| Access by Car | About 10 minutes from Hokudan IC, about 15 minutes from Awaji IC on the Kobe-Awaji-Naruto Expressway |
| Access by Bus | Five-minute walk from Shinsai Kinen Kōen bus stop on the Awashin Awahime / Awaji Nishikaigan Line |
References
- 野島断層 - 文化遺産オンライン (Cultural Heritage Online)
- https://bunka.nii.ac.jp/heritages/detail/192452
- 国指定文化財等データベース - 野島断層 (Agency for Cultural Affairs)
- https://kunishitei.bunka.go.jp/bsys/maindetails/401/3198
- 野島断層 - 淡路市ホームページ (Awaji City Official Website)
- https://www.city.awaji.lg.jp/soshiki/shakai/48183.html
- 北淡震災記念公園 - 淡路島観光ガイド
- https://www.awajishima-kanko.jp/manual/detail.html?bid=432
- 野島断層 - Wikipedia
- https://ja.wikipedia.org/wiki/野島断層
Last verified: 2026.05.10