Tsurugisan Oshikimi Water: Tokushima Prefecture | Complete Guide to Sacred Water from Japan’s Top 100 Waters and Climbing Routes
Tsurugisan Oshikimi Water (剣山御神水), which springs forth near the summit of Mount Tsurugisan in Miyoshi City, Tokushima Prefecture, is one of Japan’s most renowned sacred waters, selected by the Ministry of the Environment as one of the “Top 100 Waters of Japan.” This clear water, which springs from behind the Otsurugisan Shrine at the summit of Mount Tsurugisan—the second-highest peak in western Japan at 1,955 meters elevation—is the source of the Iya River and has been revered since ancient times for its spiritual efficacy in curing illnesses and promoting rejuvenation. This article provides a comprehensive explanation of Tsurugisan Oshikimi Water’s history, water quality, access methods, climbing routes, and surrounding information.
What is Tsurugisan Oshikimi Water? Sacred Water Selected as One of Japan’s Top 100 Waters
Tsurugisan Oshikimi Water is natural spring water that springs from beneath Gotouishi, a massive rock about 50 meters high that serves as the sacred object of worship at Otsurugisan Shrine, located just below the summit of Mount Tsurugisan, the second-highest peak in Shikoku. In 1985 (Showa 60), it was selected as one of the “Top 100 Waters of Japan” by the Ministry of the Environment, and it was also chosen as one of the “Tokushima Water Journey 50 Selections,” making it a representative water spot of Tokushima Prefecture.
5th Place in the Ministry of the Environment’s “Top 100 Waters Selection Tournament” in the “Excellent Water from Remote Regions” Category
In the Ministry of the Environment’s “Top 100 Waters Selection Tournament” conducted in 2015, it ranked 5th in the “Excellent Water from Remote Regions” category. Due to its location near the summit at nearly 1,900 meters elevation, it received high praise as truly “water from a remote region.” Because it is located in the center of Tsurugisan National Government Park and maintains a pristine natural environment, this clear water quality is preserved.
Role as the Source of the Iya River
Tsurugisan Oshikimi Water is located at the source of the Iya River in the Yoshino River water system. The water that springs forth from here flows down through Iya Gorge and eventually merges with the Yoshino River, known as “the third brother of Shikoku.” The Iya region is known as a remote area with legends of fleeing Heike clan members, and the water source that has nurtured this region’s rich nature and culture is precisely Tsurugisan Oshikimi Water.
History and Legends of Tsurugisan Oshikimi Water
The name “Mount Tsurugisan” itself derives from legends related to Emperor Antoku. According to the legend, the Heike clan, defeated in the Battle of Dannoura, fled to Mount Tsurugisan with the young Emperor Antoku, and hid the emperor’s sacred sword in the mountains. This is said to be the origin of the name “Mount Tsurugisan.”
Relationship Between Otsurugisan Shrine and the Sacred Water
Otsurugisan Shrine (大剣神社) is enshrined near the summit of Mount Tsurugisan, and Gotouishi, the sacred object of worship, has been an object of faith since ancient times. The water that springs forth from directly below this Gotouishi has been revered as sacred water, and pilgrims and mountain ascetics have believed that drinking this holy water purifies the body and mind and grants spiritual efficacy.
Legends of Water for Rejuvenation and Healing of Illness
Tsurugisan Oshikimi Water has been passed down through generations in the local area as “water for rejuvenation” and “water that cures illness.” Rich in minerals and with a clear taste, it has soothed the fatigue of climbers who have ascended the steep climbing path and quenched their thirst. Scientific analysis of the water quality has confirmed its purity and rich mineral content, suggesting that these legends have a certain basis in fact.
Water Quality and Characteristics of Tsurugisan Oshikimi Water
Rich Mineral Content
Tsurugisan Oshikimi Water has permeated through granitic soil layers over many years, and contains abundant mineral components such as calcium, magnesium, and potassium. Because it is spring water in a high-altitude mountainous area, it has almost no human-caused contamination and maintains extremely pure water quality.
Water Temperature and Taste
Throughout the year, the water temperature remains stable at around 10°C, staying cold even in summer and never freezing even in winter. The mouthfeel is smooth, with a slight sweetness characteristic of soft water. It has perfect refreshing qualities for soothing the fatigue of climbing.
Precautions Regarding Drinking Water
Although Tsurugisan Oshikimi Water has been selected as one of Japan’s Top 100 Waters, the Ministry of the Environment and Miyoshi City do not guarantee that it is suitable for drinking. If you drink the spring water directly, you do so at your own risk. If you have concerns, it is recommended to boil it before drinking or take it home and treat it with purification. However, many climbers have drunk it since ancient times, and there have been no reports of serious health hazards.
Access Methods to Tsurugisan Oshikimi Water
Access to the Climbing Trailhead
To visit Tsurugisan Oshikimi Water, you must first access the Mount Tsurugisan trailhead.
By Car:
- Approximately 2.5 hours from Tokushima City via National Route 438
- Use the Minonokoshi Trailhead Parking Lot (paid)
- GPS: “Tsurugisan Minonokoshi Trailhead” or “Tsurugisan Sightseeing Climbing Lift”
By Public Transportation:
- From JR Tokushima Station, take the seasonal Tsurugisan climbing bus (approximately 3 hours)
- It is recommended to confirm operations in advance.
Climbing Route from Minonokoshi to the Sacred Water
Tsurugisan Oshikimi Water is located approximately 90 meters down the west side of Otsurugisan Shrine.
When Using the Lift:
- Take the Tsurugisan Sightseeing Climbing Lift from Minonokoshi Trailhead to Nishijima Station (approximately 15 minutes)
- Hike from Nishijima Station to Otsurugisan Shrine (approximately 40 minutes)
- Descend west from Otsurugisan Shrine to the sacred water (approximately 5 minutes)
- Total travel time: approximately 1 hour one way
Hiking on Foot:
- Climb the Daikentsu Trail from Minonokoshi Trailhead
- Elevation gain of approximately 330 meters, distance of approximately 1.7 kilometers
- Approximately 1 hour 20 minutes of climbing brings you to Otsurugisan Shrine
- Head to the sacred water from Otsurugisan Shrine
Junction Point to the Sacred Water
There is a small path descending to the west on the way from Otsurugisan Shrine to the summit of Mount Tsurugisan (1,955 meters elevation). Following the signage and descending approximately 90 meters, you will find the water spring site beneath the massive Gotouishi. If you descend via the Futamimi Viewpoint, you will also pass through this sacred water site.
Basic Information on Mountain Climbing Tsurugisan
Climbing Season and Duration
Best Season:
- Late May to October: Period when alpine flowers are beautiful
- June: Cherry laurel blooming season
- October: Autumn foliage peak season
- Winter (November to April) has snow cover and is for advanced climbers
Standard Course Time:
- Minonokoshi → Sacred Water → Summit → Minonokoshi: Round trip approximately 3 to 4 hours (without lift)
- With lift: Round trip approximately 2 to 3 hours
Climbing Difficulty and Gear
Mount Tsurugisan is a famous mountain representing western Japan, but the climbing trail is relatively well-maintained and easy even for beginners. However, due to its high elevation, weather changes are dramatic, and thorough preparation is necessary.
Required Equipment:
- Climbing boots (trekking shoes or better)
- Rain wear (separate upper and lower jacket)
- Cold-weather clothing (necessary even in summer due to high elevation)
- Drinking water (can be replenished with sacred water, but carry backup)
- Energy/emergency food
- Headlamp
- Map and compass (or GPS)
- First aid kit
Mountain Climbing Registration
When climbing Mount Tsurugisan, submission of a climbing registration is recommended. There is a registration box at the Minonokoshi Trailhead, and you can also submit online.
Tourist Attractions Around Mount Tsurugisan
Iya Gorge and Heike Clan Legends
The Iya Gorge, which spreads north of Mount Tsurugisan, is counted among Japan’s three great remote regions. Legends of fleeing Heike clan members remain strong, and historical points of interest such as Kazura Bridge and Heike Manor dot the area. Many tourists visit this region in combination with climbing Mount Tsurugisan.
Natural Features of Tsurugisan National Government Park
Tsurugisan National Government Park, centered on Mount Tsurugisan, is a precious area with rich remaining nature. Beech and rhododendrons and other alpine flora, Japanese serow and dormice and other wildlife inhabit the area. Diverse fauna and flora can be observed along the climbing trail.
Nearby Accommodations
Near Minonokoshi:
- Tsurugisan Peak Hut (mountain hut near the summit)
- Tsurugisan Kohma Onsens (onsen lodging near the trailhead)
Iya Onsen Hot Spring District:
- Iya Onsen Hotel
- Shin-Iya Onsen Hotel Kazura Bridge
- Various guest houses and lodgings
Precautions When Visiting Tsurugisan Oshikimi Water
Environmental Conservation Considerations
Tsurugisan Oshikimi Water is a precious natural heritage. Please note the following when visiting:
- Always take trash with you
- Do not pollute the water spring site
- Stay on the climbing trail
- Do not collect flora and fauna
- Speak quietly and peacefully
Safety Management
- Pay attention to sudden weather changes (fog frequently develops near the summit)
- Avoid solo climbing; act in groups
- Do not push yourself if in poor health
- Manage time carefully so you can descend before sunset
- Confirm cellular phone reception beforehand (signal is weak in some areas near the summit)
Regarding Taking Water Home
If you wish to take sacred water home, prepare a clean container. However, because it is raw water, it is not suitable for long-term storage. If you take it home, consume it soon or boil and purify it.
Four-Season Charm of Tsurugisan Oshikimi Water
Spring (May to June)
As snow melts, water volume increases, and this is the season to taste the most pristine water. It is also cherry laurel blooming season, and beautiful flowers can be enjoyed along the climbing trail. Hiking through fresh greenery is exhilarating.
Summer (July to August)
Due to the high elevation, comfortable climbing can be enjoyed even in the height of summer. The cold sacred water soothes bodies drenched in sweat. However, afternoon thunderstorms are likely, so early morning departure is recommended.
Autumn (September to October)
The autumn foliage season is the most beautiful time for Mount Tsurugisan. Beech and maple leaves color the mountainside, and the sacred water can be enjoyed in crystal-clear air. This is also the season with the most climbers.
Winter (November to April)
Snow-season Mount Tsurugisan is for advanced climbers, but the sacred water surrounded by snow scenery is enveloped in a mystical atmosphere. Winter freezing can occur, so winter mountaineering gear such as crampons is essential.
Tsurugisan Oshikimi Water and Regional Culture
Connection with Shugendo (Mountain Ascetic Practice)
Mount Tsurugisan has been known since ancient times as a sacred site for Shugendo, with many mountain ascetics visiting for practice. The sacred water was an important water source during practice, used to purify the body and mind. Even today, those making pilgrimages of faith continue to visit.
Relationship with Local Residents
For residents of the Iya region, Mount Tsurugisan is an object of faith and a water source sustaining their livelihood. The water from the Iya River flowing from Tsurugisan Oshikimi Water is used for regional agriculture and household water, supporting regional society.
Regional Promotion Using Sacred Water
In recent years, efforts have been made to promote regional development by utilizing this region’s abundant water resources, including Tsurugisan Oshikimi Water. Products such as “Forest Rainwater” mineral water and water-themed tourism tours represent efforts to rediscover the value of sacred water.
Conclusion: Experience the Charm of Tsurugisan Oshikimi Water
Tsurugisan Oshikimi Water in Miyoshi City, Tokushima Prefecture, is one of Japan’s representative sacred waters selected as one of the Top 100 Waters of Japan, and is the source of the Iya River, springing forth from nearly 1,900 meters elevation. This holy water, revered since ancient times as water for rejuvenation and healing of illness, springs forth from beneath Gotouishi, the sacred object of Otsurugisan Shrine, providing coolness and healing to climbers.
Although climbing Mount Tsurugisan is a relatively beginner-friendly route, thorough equipment and preparation are necessary due to its high elevation. Using the lift from the Minonokoshi Trailhead, you can reach the sacred water in approximately one hour one way. Please visit Mount Tsurugisan to experience the beautiful natural scenery of each season and taste this clear sacred water.
Tsurugisan Oshikimi Water, where you can experience this precious water resource and the history of Japanese mountain faith while showing consideration for environmental conservation, will continue to be a natural and cultural heritage representing Tokushima Prefecture, inspiring many people for years to come.
