Guide
Tanohara Wetlands is a precious natural monument located in the Shiga Kogen area of Yamanouchi, Nagano Prefecture. As a designated nature conservation park, it maintains a highly diverse and rich ecosystem. The most striking feature of this area is the well-maintained wooden boardwalk system, which allows visitors to safely observe the unique wetland landscapes and delicate alpine plants without damaging the fragile environment.
This region serves as a vital part of the natural conservation zones in Nagano Prefecture, dedicated to preserving the pristine environment of the Japanese Alps. Efforts are continuously made to protect the high-altitude ecosystems, ensuring that the precious plant species and geological formations are preserved for future generations. The management of the area focuses on balancing the enjoyment of these historic landscapes with the necessity of long-term environmental preservation.
The primary attraction is the extensive network of wooden boardwalks that weave through the wetlands, offering a close-up view of the water-filled terrain. Depending on the season, visitors can witness a spectacular display of blooming alpine flowers and the harmonious scenery of the surrounding mountains. As a nature conservation park, the area holds immense value as a habitat for various flora and fauna.
The ideal time to visit is from May to September. During these months, you can witness the dramatic changes in plant growth and the shifting colors of the landscape. The peak blooming seasons are particularly wonderful for those interested in observing rare alpine flora in their full glory.
The main activity is nature observation while walking along the boardwalks. Because this is a protected area, all visitors are expected to stay strictly on the designated paths to prevent any damage to the ecosystem. It is a place to immerse yourself in the sounds and sights of nature, enjoying a peaceful and meditative stroll.
The Shiga Kogen area is a vast highland region with numerous other natural attractions. Beyond the wetlands, there are various hiking trails and observation points that allow you to fully experience the high-altitude wilderness of Nagano.
As a nature conservation park, environmental mindfulness is essential. Please stay on the boardwalks at all times to protect the plants and the terrain. We recommend wearing comfortable walking shoes and clothing suitable for mountain weather. Please note that there is no English language support available on-site, and most local services may require cash.