
Guide
Sanbon Sugi (Sanbon-sugi of Mt. Oiwa)
10 min readOverview & Charm
The Sanbon Sugi is a rare and magnificent Japanese cedar located near the approach to Oiwa-yama Shrine in Hitachi City, Ibaraki Prefecture. Its most striking feature is the three massive trunks that branch out in different directions at approximately 3 meters above the ground, creating an overwhelming presence that serves as a symbol of nature's life force. The tree is estimated to be around 500 years old, with a trunk circumference of 8.4 meters and a height reaching 40 meters. While there are various theories regarding whether this shape resulted from a single tree splitting or three trees fusing together, it remains a highly valued masterpiece of natural architecture.
Historical & Cultural Background
The area surrounding Mt. Oiwa has a long history, recorded in the ancient 'Hitachi no Kuni Fudoki' as a sacred landscape. The region has been a site of spiritual significance since the Jomon period, with archaeological remains of ritual sites nearby. Throughout the ancient and medieval eras, it served as a place for ascetic training (Shugendo). Oiwa-yama Shrine is said to be home to 188 different deities, deeply connecting the site to Japan's traditional nature worship. The Sanbon Sugi has been protected and revered by local communities and pilgrims for generations, embodying the Japanese spiritual culture that honors the divinity residing within nature.
Main Highlights
The primary highlight is the breathtaking sight of the three massive trunks. The way the three branches rise powerfully toward the sky from just a few meters above the ground creates a profound impact on all who see it. As a designated Natural Monument of Ibaraki Prefecture (designated in 1968), the tree holds immense historical and academic importance. Visitors can feel the breath of life from a tree that has survived for over 500 years, surrounded by the serene atmosphere of the deep forest.
Recommended Seasons & Times
While the Sanbon Sugi's powerful presence can be enjoyed year-round, the scenery changes beautifully with the seasons. The lush greenery of spring and the vibrant colors of autumn create a harmonious and stunning landscape with the surrounding forest. We highly recommend visiting in the early morning; the forest air is exceptionally clear and crisp during this time, enhancing the sacred atmosphere and providing a quiet environment to connect with this ancient giant.
Experiences & Activities
Visitors can enjoy 'Shinrin-yoku' (forest bathing) to observe the exquisite forms of nature, often combined with a visit to the nearby Oiwa-yama Shrine. Witnessing the overwhelming scale of the Sanbon Sugi fosters a deep sense of awe and respect for the natural world. The area also features well-maintained hiking trails, allowing you to experience the historical background and natural wonders through all your senses.
Surrounding Area
The area around Mt. Oiwa is dotted with historical sites and natural landmarks. For instance, the Satsu Shrine Okumiya is a historical site rediscovered through topographical surveys. Mt. Oiwa itself is known as a powerful spiritual site, and visitors can hike toward the summit (elevation 530m), where various monuments related to Mito Mitsukuni and Mito Sadanobu can be found.
What to Bring, Clothing & Etiquette
As you will be moving through a natural environment, please keep the following in mind:
- *Payment Methods:** Payments for shrine offerings or nearby facilities are primarily cash-based. Please check in advance if credit cards or IC cards are accepted.
- *English Support:** While signage is primarily in Japanese, the natural beauty and cultural significance are universally easy to appreciate.
- *Reservations:** No prior reservation is required to view the Sanbon Sugi, but please follow local rules if participating in shrine rituals or hiking.
- *Clothing & Gear:** Since you will be walking on unpaved paths and through natural forest, comfortable walking shoes and weather-appropriate clothing are highly recommended.
- *Photography:** Photography of the landscape is permitted, but please remain respectful and mindful of the sacred nature of the site.
- *Accessibility:** Due to the natural terrain, there are uneven surfaces and unpaved paths. The area is not suitable for wheelchair users.
- *Etiquette:** To preserve this sacred natural environment, please take all trash home with you and refrain from touching the plants or trees.