Overview of Mount Iwawaki
Mount Iwawaki is one of the New 100 Famous Mountains of Japan, a selection made by mountaineer Motoro Iwasaki. Its summit offers magnificent views of the Osaka Plain and Osaka Bay, making it a rewarding destination for hikers.
Near the summit is a vast approximately 8-hectare thatched-grass field. In autumn, the grass develops silvery plumes that cover the mountainside in a breathtaking display. This scenery is recognized as “Flowering Pampas Grass at the Summit of Mount Iwawaki”, one of the New Eight Scenic Views of Kawachinagano.
The thatch harvested from these fields is a valuable natural resource used as a material for restoring historic cultural properties and traditional buildings. In the past, the Umenoki Permanent Cableway was used to transport the thatch down the mountain. Today, only the framework of the former facility remains.
At the foot of the mountain, the Iwawaki-no-Mori Shikisaikan serves as a visitor base, providing information about hiking routes and the surrounding natural environment.
Thatched Grass Fields and Pampas Grass
Every year, pampas grass is harvested from the thatched-grass fields near the summit. The harvested material is used for the restoration and preservation of historic buildings and cultural properties.
The framework of the former Umenoki Permanent Cableway, once used to carry the thatch down the mountain, can still be seen near the summit and offers a glimpse into the area’s history.
In summer, the pampas grass grows lush and green, while in autumn it transforms into a sea of silvery plumes. Its changing appearance throughout the seasons is one of Mount Iwawaki’s great attractions.
Panoramic Views from the Summit
The summit of Mount Iwawaki offers an unobstructed panoramic view. In addition to the Osaka Plain, visitors can see far across Osaka Bay. On clear days, the view may extend as far as Mount Rokko and Awaji Island.
The scenery is particularly atmospheric around sunset, when the sky and cityscape are illuminated by warm evening light. A viewing deck is also available, allowing visitors to enjoy the spectacular scenery from a designated viewpoint.
Highlights of Mount Iwawaki
Mount Iwawaki offers much more than beautiful mountain scenery. The area combines accessible hiking trails, rich natural surroundings, historic temples, and seasonal landscapes, making it an enjoyable destination for a wide range of visitors.
Hiking Trails
Several hiking routes around Mount Iwawaki can be enjoyed by everyone from beginners to experienced hikers.
One of the most popular routes follows part of the Diamond Trail from a trailhead near Takihata Dam toward the summit. Another route, known as the Iwawaki-no-Michi, has relatively gentle slopes and passes through beautiful cedar forests and deciduous woodland that becomes colorful in autumn. Its moderate terrain also makes it suitable for families.
The ascent to the summit takes approximately two hours. By choosing a different route for the descent, hikers can also enjoy a longer course of approximately three hours toward Amami Station.
Iwawaki-no-Mori Shikisaikan
Partway along the road leading to Iwawaki Temple and the Mount Iwawaki trailhead is the Iwawaki-no-Mori Shikisaikan, a facility where hikers can take a break and learn more about the local natural environment.
The name was selected through a public naming competition. In addition to serving as a rest area, the facility functions as an information center for the nature of Mount Iwawaki.
Inside, visitors can find information about hiking routes and explanations of local plants and animals. Nature observation events are also held, providing opportunities to learn more about the mountain’s ecosystem.
The terrace offers views toward Mount Nijo and Mount Ikoma, making it a pleasant place to relax while enjoying the fresh mountain air. Free parking is also available, making the facility convenient for visitors arriving by car.
Iwawaki Temple
Located halfway up Mount Iwawaki, Iwawaki Temple is an ancient temple traditionally believed to have been founded by En no Ozunu, the legendary founder of Shugendo mountain asceticism.
The temple is said to have been established during the Daibo era (701–704). It flourished for centuries as a training ground for yamabushi, practitioners of the Shugendo tradition.
The temple grounds are home to a pagoda known as a Tahoto and a seated statue of Dainichi Nyorai, both designated as Important Cultural Properties of Japan. Visitors can appreciate these historically significant buildings and Buddhist artwork at close range.
In early autumn, the temple grounds are covered with blooming begonia grandis, creating a colorful seasonal scene. The grounds are also home to a large kaya tree believed to be more than 400 years old, which is designated as a natural monument of Kawachinagano City.
Surrounded by quiet forests, Iwawaki Temple offers a peaceful setting where visitors can experience both the history and natural beauty of the mountain.
Gyōja Falls
Gyōja Falls is a secluded waterfall along the approach to Iwawaki Temple at the foot of Mount Iwawaki.
Surrounded by lush trees including oak, the waterfall flows down a series of rocky levels, creating a cool and soothing landscape. During periods of severe winter cold, the entire waterfall can sometimes freeze, giving the area a completely different appearance.
Sunlight filtering through the surrounding trees creates a tranquil atmosphere, making the area a pleasant place to enjoy the forest and the sounds of nature.
Places to Visit Around Mount Iwawaki
The area surrounding Mount Iwawaki offers a variety of attractions where visitors can enjoy nature and history. Combining these destinations with a visit to the mountain is a great way to experience more of the Okukawachi region.
Takihata Dam
Takihata Dam is a multipurpose dam in the Takihata area and has the largest reservoir capacity among dams in Osaka Prefecture. It is also one of the trailheads for Mount Iwawaki.
Walking and cycling paths have been developed around the reservoir, allowing visitors to enjoy outdoor activities while taking in the scenery.
Mount Iwawaki can be seen from the lakeshore, creating an impressive landscape of mountains reflected against the reservoir. The lake is also home to wild birds such as kingfishers and crested kingfishers, while mandarin ducks can sometimes be seen during autumn and winter.
Facilities around the reservoir also offer activities such as barbecuing and trout fishing, making Takihata Dam a popular destination for outdoor recreation.
Makiozan Sefukuji Temple
Makiozan Sefukuji Temple is an ancient temple located not far from Mount Iwawaki. It is particularly famous as the fourth temple of the Saigoku Kannon Pilgrimage, a historic pilgrimage route visiting 33 temples dedicated to Kannon.
The temple has a long history and is traditionally associated with Kobo Daishi (Kukai), who is said to have practiced here. Surrounded by abundant nature, the temple is especially beautiful in autumn, when the surrounding foliage turns vibrant colors and attracts many visitors.
Its combination of history and natural beauty creates a peaceful atmosphere where visitors can enjoy a quiet moment of reflection.
Access to Mount Iwawaki
There are three main trailheads for climbing Mount Iwawaki.
Takihata – Takihata Dam
From Takihata Dam, hikers can follow the Diamond Trail toward the summit. The route is relatively gentle and is suitable for beginners.
Iwawaki Temple
From Iwawaki Temple, hikers can follow a route toward the summit. This route is ideal for visitors who would like to combine temple sightseeing with a mountain hike.
Kimitoge Pass
From Kimitoge Pass, hikers can follow the Diamond Trail toward the summit. This is a longer traverse route recommended for experienced and physically fit hikers.
Each trailhead can be reached by public transportation or car.
Conclusion
Mount Iwawaki brings together beautiful pampas grass fields, spectacular panoramic views, rich natural surroundings, and historic temples.
With hiking routes suitable for a range of abilities, from beginners to experienced hikers, the mountain is an accessible destination for enjoying the natural beauty of Osaka.
Its convenient access from central Osaka also makes Mount Iwawaki a suitable destination for a day trip and hiking excursion. Visit in different seasons to experience the changing scenery, from fresh green vegetation in summer to the magnificent silver pampas grass of autumn.