A Day Trekking Through Iriomote’s Subtropical Jungle

With almost no flatlands, Iriomote Island is dominated by mountains. Thick vegetation reminiscent of a tropical jungle blankets the landscape, including towering ferns and dense greenery. The Urauchi River walking trail provided us the perfect opportunity to immerse ourselves in the flora and fauna of this newly designated UNESCO World Natural Heritage Site.

Our journey began with a boat ride from the river mouth, taking us upstream through breathtaking scenery. Along the way, we marveled at the island’s largest and deepest river, flanked by expansive mangrove forests. I appreciated that only one boat operator is permitted to ferry passengers upstream—a thoughtful measure to minimize environmental impact and preserve the area’s pristine beauty.

Stepping into the lush subtropical forest, we followed a well-maintained trail designed to harmonize with nature, passing waterfalls and striking rock formations. Among them was Gunkan Rock (amagoi-iwa), historically used by locals in rainmaking ceremonies. We paused at Kanbire Falls, known as "The Seat for the God," one of the island’s most sacred spots. And we had our alfresco picnic by a heart-shaped pothole, a natural wonder said to hold healing energy.

“When visited calmly,” the guide leaflet noted, “you are bound to heal both body and soul through the vast, embracing power of nature.”And indeed, despite the day’s physical demands, the experience felt deeply restorative.

Iriomote didnt need the UNESCO decognition, it was long before that a National Park and a well protected landscape thanks to local island initiatives that ensured mindful conservatation and the development of eco-friendly tourism that didn't overwhelmed the island’s bio-sphere.

A special thanks to our wonderful local host Kyoko-san , for making this day in such a remarkable place truly unforgettable!