Precious Environment

Japan's Southernmost National Park

A national park centered on the Yaeyama Islands, including Iriomote Island, Ishigaki Island, and Taketomi Island. It features uniquely un-Japanese landscapes where subtropical primeval forests, coral reefs, and mangroves come together.

Adjacent to Special Protection Zone

The Mt. Omoto area where Omoto526 is located is within the national park boundaries. Parts of it are designated as a "Special Protection Zone," where development is most strictly restricted, and pristine nature is preserved.

Ishigaki City's Own Nature Conservation Ordinances

In addition to national park regulations, Ishigaki City has enacted its own nature conservation ordinances. The local government and community work together to protect nature, including firefly habitat protection and dark sky preserve maintenance.

Treasure Trove of Rare Species

Home to many rare species including the nationally designated Special Natural Monument Crested Serpent Eagle (found only on Ishigaki and Iriomote Islands), as well as the Yaeyama Box Turtle and Kishinoue's Giant Skink. Neighboring Iriomote Island is also home to the Iriomote Cat, making this a biodiversity hotspot.

Japan's First Dark Sky Park

Certified by International Dark-Sky Association in 2018

In 2018, Iriomote-Ishigaki National Park became Japan's first certified Dark Sky Park. Neighboring Iriomote Island, which is part of the same national park, was also designated a UNESCO World Natural Heritage Site in 2021, demonstrating that the entire Yaeyama region is a globally precious natural area.

Mt. Omoto

Ishigaki Island's highest peak at 526m elevation. It's also the namesake of Omoto526. The hiking trail through subtropical primeval forest offers quiet encounters with endemic flora and fauna.

Kabira Bay

An emerald-green bay selected as one of Japan's 100 Scenic Views. Observe coral reefs and tropical fish via glass-bottom boat. Strictly protected as a marine park zone within the national park.

Nagura Anparu

Ishigaki Island's largest mangrove forest and tidal flat, a Ramsar Convention registered wetland. Famous for mudflat creatures like fiddler crabs and mudskippers, and as a stopover for migratory birds.

Yonehara Yaeyama Palm Grove

Japan's largest grove of Yaeyama palms (nationally designated Natural Monument), which grow only on Ishigaki and Iriomote Islands. Nearby Yonehara Beach is a popular snorkeling spot where you can encounter tropical fish and sea turtles.

● Spring Mar–May

Fireflies & Migratory Birds

The liveliest season when Yaeyama Fireflies dance in swarms and bird migration overlaps. The subtropical forest comes alive with brilliance all at once.

● Summer Jun–Aug

Ocean & Jungle

Snorkeling and diving in crystal-clear waters. Starry skies and the Milky Way at night. Experience the subtropical summer with all your senses.

● Autumn Sep–Nov

Hawk Migration & Stargazing

After typhoon season, the skies clear and large flocks of Grey-faced Buzzards pass overhead. Enjoy both birdwatching and stargazing.

● Winter Dec–Feb

Wintering Birds & Trekking

Cool and comfortable winter is prime season for Mt. Omoto trekking. With wintering migratory birds joining in, the forest shows a quiet vibrancy.

Don't Take Flora or Fauna

Collecting plants and animals within the national park is prohibited by law. Approaching Natural Monuments like the Crested Serpent Eagle is also strictly forbidden. Take only photographs.

Don't Bring Invasive Species

Bringing in shoes with soil or plants from mainland Japan can introduce invasive species. Make it a habit to clean mud from shoe soles before trekking.

Always Take Your Trash

There are no trash bins in nature. Food smells can also attract wildlife. Taking everything with you is the first step in protecting this environment.