Otomizu Gorge (Hyogo Prefecture) Complete Guide | Thorough Explanation of Autumn Leaves, Myojin Falls, and Access Information
Otomizu Gorge, located in Otomizu, Haga Town, Shiso City, Hyogo Prefecture, is a beautiful gorge that spreads out centering on Otomizu Lake, the reservoir lake of Hikihara Dam. Designated as part of the Hyonosen Gosen Nagi National Park and the Otomizu Chikusa Prefectural Natural Park, it is recognized as a scenic spot selected for the “Water Source Forest Hundred” and “Hyogo Forest Hundred” and is enjoyed by many nature enthusiasts and tourists.
In this article, we will convey the full charm of Otomizu Gorge and provide detailed information useful for your visit.
Overview and History of Otomizu Gorge
What is Otomizu Gorge?
Otomizu Gorge is located in a mountainous region in the northern part of Shiso City, Hyogo Prefecture, and is a natural gorge that spreads across the source region of the Otomizu River. Centered on Otomizu Lake formed by Hikihara Dam, the surrounding area features approximately 48 hectares of natural cedar forests called “Shisui Sugi.” This natural forest is designated as a Forest Genetic Resource Conservation Forest and holds valuable academic significance.
The gorge has relatively high elevation, and due to its location surrounded by mountains, a cool and comfortable environment is maintained even in summer. For this reason, it is popular as a place for forest bathing and summer refuge, attracting many visitors throughout the year.
Historical Background of Otomizu Gorge
In the past, this area was known for bloomery iron smelting (tatara ironmaking). Large quantities of broadleaf trees were felled as fuel for smelting, causing a temporary decline in forests. However, after bloomery ironmaking declined, the forest recovered through nature’s regenerative power, creating the lush forest seen today.
The current Otomizu Gorge features natural forests dominated by cedar mixed with cypress, beech, and Japanese oak and other broadleaf trees. This diverse tree species composition creates beautiful scenery throughout the four seasons.
Protected Area Designations and Recognitions
Otomizu Gorge has received multiple protected area designations and recognitions due to its high natural value:
- Hyonosen Gosen Nagi National Park: Part of a national park spanning Hyogo, Tottori, and Okayama prefectures
- Otomizu Chikusa Prefectural Natural Park: A natural park designated by Hyogo Prefecture
- Forestry Agency “Water Source Forest Hundred”: Selected as a forest with particularly excellent water source conservation functions
- “Hyogo Forest Hundred”: Selected as a representative forest in Hyogo Prefecture
- Forest Genetic Resource Conservation Forest: Designated as a forest for preserving cedar genetic resources
Through these designations, the natural environment of Otomizu Gorge is appropriately protected and managed.
Major Attractions of Otomizu Gorge
Otomizu Lake (Hikihara Dam)
Otomizu Lake is an artificial lake formed by Hikihara Dam. Despite being a reservoir, it harmonizes with the surrounding nature and displays beautiful scenery throughout the seasons. The reflection of mountains on the lake surface is beautifully painting-like, and especially during autumn foliage season, the lake surface reflects trees tinted in red and yellow, creating a breathtaking spectacle.
A walking path is developed along the lakeside, allowing visitors to enjoy the scenery at a leisurely pace. Spring’s fresh greenery, summer’s deep green, autumn’s autumn leaves, and winter’s snowy landscape each present completely different appearances, which is the charm of Otomizu Lake.
Myojin Falls
One of the greatest attractions of Otomizu Gorge is Myojin Falls. Located approximately 2 kilometers from the gorge entrance and about 100 meters from the forest road, this waterfall has a rare form where two different mountain streams fall into the same waterfall basin.
The waterfall has a drop of approximately 10 meters, and the sight of water falling with a thunderous roar is spectacular. A walking path is developed around the falls, allowing safe approach to near the waterfall basin. Visitors can enjoy forest bathing while listening to the sound of the waterfall and receive plenty of negative ions, making it a healing spot.
The area around Myojin Falls features particularly beautiful autumn foliage, and in fall, the collaboration of waterfall and autumn leaves is magnificent. The fresh greenery season in spring also provides a refreshing landscape, making it worth visiting regardless of season.
Natural Forest of Shisui Cedar
A natural cedar forest called “Shisui Sugi” spreads approximately 48 hectares across the source region of Otomizu River. Ancient trees exceeding 200 years old are scattered throughout, and walking through the forest allows you to feel their overwhelming presence.
This natural forest is designated as a Forest Genetic Resource Conservation Forest, ensuring its protection for the future. The forest filled with giant cedar trees is wrapped in a unique silence and sacred atmosphere, making it ideal for forest bathing.
Walking paths are developed through the natural forest, allowing visitors to savor the forest’s appeal at a leisurely pace. Walking through the forest with dappled sunlight filtering through will help you forget the hustle and bustle of daily life and refresh both body and mind.
Gorge-Side Walking Path
Otomizu Gorge features developed walking paths along the mountain stream. While the path is narrow in some places, it is appropriately maintained and provides the joy of walking through nature.
Walking along the path, you can observe diverse plant life while listening to the murmuring of the stream. The forest, mixing coniferous trees such as cedar and cypress with broadleaf trees like beech and Japanese oak, is rich in biodiversity. With luck, you may encounter wild birds or small animals.
Four Season Attractions
Spring Otomizu Gorge (March–May)
Spring in Otomizu Gorge is a season when the beauty of fresh greenery stands out. From late April through May, trees sprout leaves at once, and vibrant green colors the gorge. Particularly, the fresh green of broadleaf trees like beech and Japanese oak provides a soft, transparent green that soothes the heart.
Spring also features abundant water volume in mountain streams, with Myojin Falls displaying an impressive appearance. During this snowmelt season, the waterfall has the highest water volume of the year, flowing down with thunder, which is remarkable.
Spring is also a season of active bird activity. You can enjoy walks while listening to the songs of various birds such as bush warblers and varied tits.
Summer Otomizu Gorge (June–August)
Summer in Otomizu Gorge features the appeal of deep green forests and cool mountain streams. High elevation and surrounding mountains keep the area relatively cool even in midsummer. Walking along the stream provides even more coolness, offering a pleasant sensation like natural air conditioning.
It is an ideal season for forest bathing, and walking through forests wrapped in deep green can provide stress relief and relaxation effects. Slowly enjoy walks while breathing in air full of negative ions.
Summer is also suitable for insect observation. You can observe diverse insects including rhinoceros beetles, stag beetles, and various butterflies.
Autumn Otomizu Gorge (September–November)
Autumn is said to be the most beautiful season in Otomizu Gorge. Typically, autumn foliage begins from late October through early November, peaking around mid-November.
Maples, beeches, and Japanese oaks turn stunning reds and yellows, wrapping the entire gorge in beauty like a brocade picture. The sight of autumn foliage reflected in Otomizu Lake is particularly spectacular, attracting many photography enthusiasts.
The collaboration of Myojin Falls and autumn foliage is also magnificent. The contrast between the white water spray of the falls and colorful autumn leaves is truly a work of art created by nature.
The autumn foliage season sees increased visitors, so visiting on weekdays or early mornings is recommended. You can enjoy autumn foliage slowly in a quiet environment.
Winter Otomizu Gorge (December–February)
Winter in Otomizu Gorge is a season of beautiful snowy landscapes. With snow accumulation, the entire gorge transforms into a silver world, displaying a magical landscape.
The sight of snow accumulating on evergreen cedars and cypresses possesses ink-painting-like beauty. Additionally, icicles may form on the mountain stream, allowing visitors to enjoy natural sculptural beauty.
During winter, road surface freezing and snow accumulation are possible, so studless tires and winter equipment are essential when visiting. Additionally, walking paths may be closed, making advance confirmation important.
Access Information
Location
〒671-4211 Otomizu, Haga Town, Shiso City, Hyogo Prefecture
Access by Car
Car access to Otomizu Gorge is convenient.
From Chugoku Expressway Yamazaki Interchange
- Travel time: Approximately 45 minutes
- Route: Exit at Yamazaki IC, head north on National Route 29 toward Haga Town. Enter a forest road on the left about 1 kilometer south of Hikihara Dam.
From Harima Expressway Harima Shingu Interchange
- Travel time: Approximately 50 minutes
- Route: Exit at Harima Shingu IC, use prefectural roads to reach National Route 29. Then follow the same route as from Yamazaki IC to Otomizu Gorge.
Precautions
- Forest roads have many narrow sections, requiring careful driving.
- There are places where passing oncoming vehicles is difficult, so drive carefully.
- Using car navigation, searching for “Otomizu Lake” or “Hikihara Dam” makes it easier to find.
Public Transportation Access
Public transportation access is limited but available through the following methods.
From JR Himeji-Shin Line “Harima Shingu Station”
- Using taxi or rental car: Approximately 40 minutes
- Bus service is limited, so it is recommended to confirm the timetable in advance.
With public transportation, access takes time, making car visits more practical.
Parking Information
Otomizu Gorge has parking spaces. However, this is not a large-scale parking lot but limited space, so arriving early is recommended during crowded seasons like autumn foliage.
Parking is free to use. From the parking area, access to the gorge and Myojin Falls is on foot.
Nearby Attractions
Hara Waterfall
Approximately 15 minutes by car from Otomizu Gorge, Hara Waterfall is a famous cascade selected as one of Japan’s Hundred Waterfalls. With a drop of 88 meters, the waterfall divides into three stages as it flows down, which is spectacular. Many tourists visit Hara Waterfall along with Otomizu Gorge, making it one of Shiso City’s representative tourist spots.
Akasai Gorge
Also located in northern Shiso City like Otomizu Gorge, Akasai Gorge is known as a famous autumn foliage spot. With walking paths developed along the gorge, visitors can enjoy beautiful collaboration of mountain stream and autumn leaves.
Chikusa Plateau
Located at approximately 900 meters elevation, Chikusa Plateau features vast grasslands and is a highland resort. With campgrounds and ski slopes, outdoor activities can be enjoyed throughout the year. It is approximately 30 minutes by car from Otomizu Gorge.
Roadside Station “Haga”
Located along National Route 29, this roadside station sells local specialty products and fresh vegetables. A restaurant is also available, offering dishes using local ingredients. It serves as a convenient rest stop on the way to Otomizu Gorge.
Precautions and Recommended Clothing for Your Visit
Clothing and Items
Spring and Autumn
- Long sleeves and long pants: For insect protection and temperature change adaptation
- Comfortable walking shoes: Trekking shoes or sneakers recommended
- Jacket: Bring something to layer as mornings and evenings are cold
Summer
- Breathable clothing: Long sleeves and long pants recommended despite breathability for insect protection
- Hat: For sun protection
- Insect repellent spray: For mosquito and horsefly prevention
- Drinking water: Bring sufficient quantities
Winter
- Warm clothing: Down jackets and other warm outerwear
- Gloves and hat: For warmth
- Non-slip shoes: For snowy and frozen road conditions
Common Items
- Camera: To capture beautiful scenery
- Binoculars: Convenient for bird watching
- Map or smartphone: To avoid getting lost
- Garbage bag: Always take your trash with you
Safety Precautions
- Weather Confirmation: Check the weather forecast before visiting and avoid visiting during poor weather.
- Avoid Solo Travel: Try to travel in groups of multiple people so you can help each other in emergencies.
- Wildlife: Bears and wild boars may inhabit the area. Make noise while walking and attach bells as precautions.
- Hydration: Particularly in summer, be mindful of dehydration and drink water frequently.
- Mobile Phone Signal: There may be places where signal is unavailable. Inform someone of your itinerary beforehand.
Etiquette and Environmental Protection
- Always take trash with you: Taking trash with you is fundamental to protecting the natural environment.
- Plant collection prohibited: Plant collection is prohibited within protected areas.
- Walk only on designated paths: To protect vegetation, do not enter areas outside walking paths.
- Keep noise levels down: Control loud voices and loud sounds to enjoy the quiet environment.
- No campfires or smoking: Avoid campfires and smoking outside designated areas to prevent fires.
Otomizu Gorge Enjoyment Suggestions
Photography Spots
Otomizu Gorge features many attractive photography spots for photography enthusiasts.
Recommended Photography Points
- Otomizu Lake Surface Reflection: Early morning during calm winds, with beautiful reflections of mountains and autumn foliage on the lake surface.
- Myojin Falls: Capture the full waterfall from a slight distance, or shoot from near the basin for dramatic effect.
- Dappled Sunlight on Walking Path: Light filtering through giant cedars is fantastical.
- Mountain Stream and Autumn Foliage: Beautiful contrast between flowing water and colored leaves.
Photography Tips
- Autumn foliage photography captures more vivid colors on cloudy days.
- Use a tripod for waterfall photography and express water flow with slow shutter speed for effectiveness.
- Use slanted light during early morning or evening to capture photos with depth.
Forest Bathing and Relaxation
Otomizu Gorge provides an ideal forest bathing environment. Forest bathing is said to have the following effects:
- Stress reduction
- Immune system enhancement
- Blood pressure reduction
- Relaxation effect
Walk slowly through the natural forest, taking deep breaths while inhaling forest air. Listen to the murmuring of streams and bird songs, using all five senses to experience nature, allowing for both physical and mental refreshment.
Hiking and Trekking
Multiple hiking courses are available around Otomizu Gorge. Choose courses according to your fitness level and available time, and enjoy at your own pace.
Beginner Courses
- Round trip from parking area to Myojin Falls: Approximately 1–2 hours
- Relatively flat and easy to walk, also recommended for families
Intermediate Courses
- Courses around gorge-side walking paths: Approximately 2–3 hours
- Walk along the mountain stream and fully enjoy the natural forest
Proper equipment and planning ensure safe hiking enjoyment.
Best Season to Visit Otomizu Gorge
Otomizu Gorge has year-round appeal, but the particularly recommended seasons are as follows:
Autumn Foliage Season (Late October–Mid-November)
The most popular season is autumn foliage. Maples, beeches, and Japanese oaks turn color, and the entire gorge becomes tinted in reds and yellows. Peak foliage typically occurs from early to mid-November, attracting many tourists during this period.
Autumn Foliage Season Points
- Best viewing: Early to mid-November (varies by year)
- Weekday early mornings recommended to avoid crowds
- Check weather forecasts and choose clear days for beautiful foliage viewing
Fresh Greenery Season (Late April–May)
Spring’s fresh greenery is also very beautiful and is the second most popular season after autumn foliage. Soft and vibrant green envelops the gorge, creating a refreshing atmosphere.
Fresh Greenery Season Points
- Best viewing: Late April through mid-May
- Enjoy bird songs as well
- Relatively uncrowded, allowing leisurely walks
Summer Refuge Season (July–August)
For those seeking to escape summer heat and cool off, Otomizu Gorge is ideal. High elevation and areas near streams offer cool and comfortable conditions.
Summer Refuge Season Points
- Ideal for forest bathing
- Remember insect prevention measures
- Hydrate frequently
Shiso City’s Appeal and Otomizu Gorge’s Position
Shiso City is located in the central-western part of Hyogo Prefecture, with forests covering approximately 90% of its area, making it a naturally rich region. Besides Otomizu Gorge, the city features many natural tourist spots including Hara Waterfall, Akasai Gorge, and Chikusa Plateau.
Otomizu Gorge is one of Shiso City’s representative tourist destinations and plays an important role in water source conservation functions, selected for the “Water Source Forest Hundred.” The clear water nurtured by this gorge supports the lives of people in downstream areas.
Shiso City pursues the harmony of natural environment protection and tourism, with appropriate management and development. We visitors must also comply with etiquette and cooperate in environmental protection to preserve this beautiful nature for future generations.
Summary: Experience the Mysteries of Nature at Otomizu Gorge
Otomizu Gorge is a natural treasure that Shiso City, Hyogo Prefecture, proudly presents. With numerous attractions including the beautiful gorge spreading around Otomizu Lake, the spectacular Myojin Falls, and the Shisui Cedar natural forest with trees exceeding 200 years old, there is much to see.
Spring’s fresh greenery, summer’s deep green and coolness, autumn’s foliage, and winter’s snowy landscape each show different faces of Otomizu Gorge. The beauty of the autumn foliage season in particular is exceptional, creating unforgettable memories for those who visit.
For those wanting to escape urban hustle and bustle and spend quiet time in nature, those seeking forest bathing refreshment, and those wanting to capture beautiful scenery in photographs, Otomizu Gorge warmly welcomes all.
Car access is convenient, with approximately 45 minutes from Yamazaki Interchange on the Chugoku Expressway. Other tourist spots like Hara Waterfall and Akasai Gorge are scattered in the surrounding area, making it recommended to enjoy Shiso City’s nature over a full day.
When visiting, prepare appropriate clothing and equipment, exercise safety caution, and enjoy nature while respecting etiquette. Please also cooperate in environmental protection to preserve this beautiful environment for the future.
Experience the mysteries of Japan’s beautiful nature at Otomizu Gorge. It will surely become a wonderful memory to treasure.
