Guide to Erigohara Water Hole (Heavenly Rock Cave) Complete Guide | Sacred Site of Selected 100 Famous Waters in Shima City, Mie Prefecture
The “Erigohara Water Hole” located in Erigohara, Isobe Town, Shima City, Mie Prefecture is a mystical place known as the legendary site of the Heavenly Rock Cave (Amatsu Iwato) where Amaterasu Ōmikami, the sun goddess of Japanese mythology, hid. Also called “Heavenly Rock Cave,” it was designated as one of Japan’s 100 Selected Famous Waters by the Ministry of the Environment in 1985. Furthermore, in the 2015 Japan’s 100 Selected Famous Waters Grand Popularity Election, it was ranked 4th in the “Wonderful Famous Waters in Hidden Regions” category.
This article comprehensively introduces information about the Erigohara Water Hole, including its mystical appeal, historical background, geological characteristics, access methods, and surrounding tourist attractions.
About the Erigohara Water Hole | Basic Information and Overview
The Erigohara Water Hole is a spring located in the Erigohara district on the middle slopes of Mount Osaka, near the center of the Shima Peninsula. Located along the ancient pilgrimage route to Ise Shrine, it has become a sacred site visited by many local residents and tourists throughout the year.
Key Features
- Location: Erigohara, Isobe Town, Shima City, Mie Prefecture
- Alternative Name: Heavenly Rock Cave
- Daily Spring Discharge: Approximately 31,000 tons
- Water Temperature: Constant 14°C (nearly constant year-round)
- Designation: Ministry of Environment’s 100 Selected Famous Waters (designated 1985)
- Cave Dimensions: Spring outlet approximately 50cm in diameter
The cool, clear spring water flowing from the Erigohara Water Hole, surrounded by a mysterious atmosphere amid woodlands, fills visitors with pure feelings.
Legend of the Heavenly Rock Cave and Mythological Background
The reason the Erigohara Water Hole is called the “Heavenly Rock Cave” derives from the legend of Amaterasu Ōmikami’s hiding in the rock cave in Japanese mythology.
Overview of the Rock Cave Hiding Myth
According to Japanese mythology, Amaterasu Ōmikami, the sun goddess, became angry at the violent behavior of her brother Susanoo and hid in the Heavenly Rock Cave, plunging the world into darkness. Faced with this situation, the eight million Shinto deities held a grand celebration in front of the cave and lured Amaterasu Ōmikami back out.
This “Heavenly Rock Cave legend” remains throughout Japan, and the Erigohara Water Hole is considered one of the legendary sites. This place, where Amaterasu Ōmikami is said to have lived in hiding, has been revered as a sacred site since ancient times.
Connection to Ise Shrine
The Erigohara Water Hole is located near Ise Shrine (Kōtai Jingū, Inner Shrine), which enshrines Amaterasu Ōmikami. According to tradition, the cave extends approximately 10 kilometers northwest to Ise Shrine, suggesting a deep connection with the shrine.
In fact, this area is surrounded by Ise Shrine’s forestland, and as part of the ancient pilgrimage route, it has long been a sacred site visited by pilgrims to Ise. Additionally, the nearby Izawa Shrine, a subsidiary shrine of Ise Shrine, illustrates that this entire region is a sacred area.
Topographical and Geological Characteristics and the Spring Mechanism
The mysticism of the Erigohara Water Hole also stems from its geological characteristics.
Limestone Topography and Cave Formation
The geology of this region contains limestone, and caves have been formed over long periods through water erosion. Limestone has the property of being easily dissolved in water, so karst topography characteristic caves and water holes develop through groundwater flow.
The Erigohara Water Hole is a natural formation created through such geological processes, with clear water continuously flowing from a spring outlet approximately 50cm in diameter.
The Secret Behind Abundant Spring Discharge
The abundant daily discharge of approximately 31,000 tons is made possible by rainwater falling on surrounding mountains infiltrating underground and naturally being filtered as it passes through limestone layers, eventually gathering at this location.
The constant water temperature of approximately 14°C year-round indicates that the water originates from deep underground. This stable temperature and water quality enhance its value as famous water.
Relationship with Shinoji Dam
The water flowing from the Erigohara Water Hole serves as an important water source for the Shima area. This spring becomes one of the source streams of Shinoji Dam and is utilized as the water supply source for the region’s water system.
Shinoji Dam functions as Shima City’s main water source, and the spring water from the Erigohara Water Hole is a precious water resource supporting the lives of local residents.
Misogi Falls and Its History as a Practice Site
Around the Erigohara Water Hole, there are “Misogi Falls” (purification falls) that have welcomed practitioners since ancient times.
Significance of Misogi Falls
Misogi Falls have been used as a site for waterfall ascetic practices to purify the body. The cold, clear water was considered ideal for cleansing body and spirit and sharpening the mind, and practitioners and believers still visit today.
The water temperature of the falls remains cold at approximately 14°C year-round, maintaining a bracing coldness even in summer. This severity enhances its value as a practice site.
Faith as a Sacred Site
Combined with the Heavenly Rock Cave legend, this place has long been revered as a sacred site. In the serene atmosphere surrounded by woodlands, visitors can experience a sense of holiness.
Particularly in early morning or evening, light filtering through the trees creates a mystical atmosphere, truly making one feel the presence of divine beings.
Value as Selected Famous Water and Water Quality
The Erigohara Water Hole, designated as one of the Ministry of Environment’s 100 Selected Famous Waters in 1985, is known for its excellent water quality characteristics.
Reasons for Selection as Famous Water
The Ministry of Environment’s criteria for selecting the 100 Famous Waters include water quality excellence, abundant water volume, maintenance of surrounding environment, and community conservation efforts. The Erigohara Water Hole was recognized as superior spring water meeting all these criteria.
In particular, being ranked 4th in the “Wonderful Famous Waters in Hidden Regions” category in the 2015 Japan’s 100 Selected Famous Waters Grand Popularity Election is evidence that its natural environment and mysticism were appreciated.
Water Quality Characteristics
The water from the Erigohara Water Hole is naturally filtered as it passes through limestone layers, becoming clear water with appropriate mineral content. It is characterized by high transparency and a cold, clean taste.
Important Notice: Designation as one of the selected 100 famous waters does not necessarily guarantee that the water is suitable for drinking. If you wish to drink it, we recommend confirming in advance with Shima City authorities. Water quality may change depending on season and weather conditions, so extreme caution is necessary when consuming raw water.
Connection with Pearl King Mikimoto Kōkichi
The Erigohara Water Hole has an interesting connection with Mikimoto Kōkichi, the “Pearl King” who first successfully cultivated pearls in the world.
Mikimoto Kōkichi and His Relationship to Shima
Mikimoto Kōkichi conducted pearl cultivation operations in the Shima region of Mie Prefecture and laid the foundation for the global pearl industry. The clear waters and abundant natural environment of Shima were essential for the success of pearl cultivation.
The clear spring water flowing from the Erigohara Water Hole has been an important element in maintaining the water quality of Shima’s seas, indirectly supporting the pearl cultivation industry. It is well known that Mikimoto Kōkichi valued the natural bounty of this region.
Access Information | How to Get to the Erigohara Water Hole
Here is information on how to access the Erigohara Water Hole.
Access by Public Transportation
By Train and Bus:
- Get off at “Kaminosatō Station” on the Kintetsu Shima Line and walk approximately 40 minutes
- Or take the Sankō Bus bound for Ise City (via Ise Road) from Kintetsu “Ise City Station”
- Get off at “Isobe Bus Center” and walk approximately 30 minutes
- Getting off at “Iwatoguchi” bus stop is closer (approximately 15 minutes walk)
Public transportation access is somewhat inconvenient, but visiting while walking the ancient pilgrimage route is also an interesting experience.
Access by Automobile
By Car:
- Approximately 30 minutes from “Ise West IC” on the Ise Expressway
- Approximately 25 minutes from “Tamaki IC” on the Ise Expressway
- Accessible via National Route 167
Parking Information:
The Erigohara Water Hole has a dedicated parking lot. It is free to use, but with limited capacity, early arrival is recommended especially during cherry blossom season and holidays.
The walk from the parking lot to the water hole is just a few minutes, via a well-maintained nature path.
Precautions When Visiting
- Walking shoes are recommended due to the natural mountain environment
- Be careful as the ground becomes slippery after rain or during rainy weather
- Even in summer, shade among the trees is cool, and areas near water are cold, so bringing something to wear is convenient
- Don’t forget insect repellent measures
Surrounding Tourist Attractions and Points of Interest
There are numerous tourist attractions worth visiting around the Erigohara Water Hole.
Izawa Shrine (Izawa no Miya)
Izawa Shrine, a subsidiary shrine of the Inner Shrine of Ise Shrine, is approximately 10 minutes by car from the Erigohara Water Hole. This formally ranked shrine enshrines Amaterasu Ōmikami’s spirit, and the annual “Rice Planting Festival” held in June is designated as an Important Intangible Folk Cultural Property of Japan.
Shinoji Dam
Shinoji Dam, where water from the Erigohara Water Hole flows, is a major water source for Shima City. The area surrounding the dam is rich in nature and suitable for walking and picnicking.
Ise Shrine (Inner and Outer Shrines)
Approximately 30 minutes by car from the Erigohara Water Hole is Ise Shrine, which can be called the spiritual home of the Japanese people. A course visiting Ise Shrine, which enshrines both Kōtai Jingū (Inner Shrine) dedicated to Amaterasu Ōmikami and Toyouke Ōmikami Shrine (Outer Shrine) dedicated to Toyouke Ōmikami, along with the Erigohara Water Hole, is popular as a spiritual pilgrimage.
Shima’s Coastline and Pearl Island
Shima City is known for its beautiful rias-type coastline, and the view of pearl cultivation rafts in Ago Bay has a unique beauty. At Mikimoto Pearl Island, visitors can learn about the history of pearl cultivation and the achievements of Mikimoto Kōkichi.
Seasonal Appeal and Best Times to Visit
The Erigohara Water Hole reveals different faces through the seasons.
Spring (Late March to May)
In spring, cherry blossoms around the area bloom magnificently. The “Ōshima Cherry,” in particular, is designated as a natural monument of Shima City and displays splendid flowers. During the cherry blossom season, the traditional local performing art of “mochi-pounding” may be performed, allowing visitors to enjoy cultural attractions as well.
Late March to early April is peak cherry blossom season, with many tourists visiting during this period.
Summer (June to August)
In summer, the greenery becomes dense, and the area around the water hole surrounded by trees is cool and comfortable. The constant 14°C cold spring water is pleasant, making it ideal as a summer retreat. Waterfall ascetic practice at Misogi Falls can dispel summer heat.
Autumn (September to November)
In autumn, the fall colors are beautiful, and visiting the water hole while trees change color is exceptional. In the serene atmosphere, visitors can experience the mystical space while feeling the deepening of autumn.
Winter (December to February)
Winter brings fewer visitors, allowing for a quieter enjoyment of the water hole. In the cold winter air, the comfortably warm spring water (14°C) provides a uniquely winter experience. However, care must be taken as the ground may freeze.
Regional Conservation Activities and 2016 Ise-Shima Summit
The Erigohara Water Hole is protected through conservation efforts by the local community.
Conservation by Local Community
Residents of the Erigohara district have engaged in cleaning activities and environmental conservation around the water hole for many years. The designation as selected famous water has led to renewed recognition of its value and further activation of conservation efforts.
Tasks including nature trail maintenance, installation of signage, and parking lot management are being pursued community-wide to ensure comfortable visits.
2016 Ise-Shima Summit and International Recognition
The 2016 Ise-Shima Summit, held in Shima City, made it internationally famous. The Erigohara Water Hole, located at the northern gateway to Shima City, the host city of the summit, also received international attention on this occasion.
As a place symbolizing the beauty of Japan’s nature and culture, the Erigohara Water Hole began welcoming many domestic and international tourists.
Etiquette When Visiting and How to Enjoy
When visiting the Erigohara Water Hole, please observe the following etiquette.
Consideration for Natural Environment
- Always take your trash with you
- Do not pick or damage plants
- Enjoy nature quietly without raising your voice
- Do not attempt to forcefully enter the cave interior
Respect as a Sacred Site
The Erigohara Water Hole is a place that has been revered as a sacred site since ancient times. Be conscious that this is a sacred place and visit with respect.
Photography Tips
- The contrast between light filtering through trees and the water hole is beautiful
- Early morning or evening soft light is recommended
- Long exposure photography of the misogi falls creates fantastic images
- Be considerate of other visitors when using tripods
Shima Pilgrimage Course Including the Erigohara Water Hole
We propose a one-day sightseeing course centered on the Erigohara Water Hole.
Sample Course (by Car)
Morning:
- 9:00 Visit Ise Shrine’s Inner Shrine
- 11:00 Lunch at Okage Yokochō
Afternoon:
- 13:00 Visit Erigohara Water Hole (approximately 1 hour)
- 14:30 Visit Izawa Shrine
- 15:30 Drive along Shima’s coastline
- 16:30 Visit Mikimoto Pearl Island
This course allows visitors to experience mythology and nature, history and culture all in one day.
Conclusion | The Appeal of the Erigohara Water Hole
The Erigohara Water Hole (Heavenly Rock Cave) in Erigohara, Isobe Town, Shima City, Mie Prefecture is a mystical place where Japanese mythology and nature converge.
Key Points:
- A sacred site known as the legendary location of Amaterasu Ōmikami’s hiding in the rock cave
- Excellent spring water designated as one of the Ministry of Environment’s 100 Selected Famous Waters (31,000 tons daily discharge)
- Natural cave and clear water created by limestone topography
- A place for waterfall ascetic practice and spiritual purification at Misogi Falls
- Important stop along the ancient pilgrimage route to Ise Shrine
- Source stream of Shima City’s water supply (Shinoji Dam)
- Tourist destination where one can enjoy seasonal natural beauty
The Erigohara Water Hole is not merely a tourist destination but a special place where Japan’s mythology and nature, faith and daily life are interconnected. By visiting in conjunction with a pilgrimage to Ise Shrine, one can experience deeper spiritual fulfillment.
Since the 2016 Ise-Shima Summit, this location has gained international attention and plays an important role in conveying the excellence of Japan’s nature and culture to the world.
When visiting Shima, be sure to stop by the Erigohara Water Hole to experience the clear spring water and mystical atmosphere. In the serene space surrounded by woodlands, you will surely find refreshment for both body and spirit.
