Ōkunoshima
大久野島
A small island in the Seto Inland Sea famous for hundreds of wild rabbits and a former poison gas factory.
What it is
- A 0.7 square kilometer island within the Setonaikai National Park managed by the Ministry of the Environment.
- Home to approximately 500 wild rabbits that roam freely across the island grounds.
- Site of a former Imperial Japanese Army poison gas factory that was once omitted from maps.
- A protected area where general vehicles are prohibited from traveling on the roads.
What to see
- Hundreds of wild rabbits inhabiting the island as of 2025.
- The Poison Gas Museum documenting the island's secret wartime history.
- A visitor center providing information about the local environment and history.
- Remnants of the factory infrastructure used for chemical weapon production.
Getting there
- Access is available only by taking a ferry or boat from the mainland.
Notes written by Japan Gems from facts in Japanese Wikipedia.
Where it is
Ōkunoshima Open in Google Maps
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