The Name and Origins of Engetsu Island
Officially Known as Takashima
The island’s official name is Takashima. However, around 1900, the name “Engetsu Island” began appearing in hot spring guides and other tourism materials. The nickname gradually became more widely used because of the island’s remarkable appearance.
The name “Engetsu” means “circular moon.” It refers to the round opening in the middle of the rock, which resembles a full moon. When viewed from the shore, the combination of the rock, sea, and circular opening creates an almost perfectly composed natural landscape.
A Natural Masterpiece Shaped by the Sea
The Mysterious Sea Arch
The most striking feature of Engetsu Island is the large opening at its center. This natural arch was formed over a very long period by coastal erosion. Waves repeatedly struck and gradually wore away the rock, eventually creating the approximately 9-meter-wide opening that can be seen today.
The shape of the opening is remarkably beautiful and can appear almost artificial when viewed from a distance. However, it is entirely the result of natural forces. The relentless power of the ocean has slowly sculpted the rock into one of Shirahama’s most iconic landscapes.
Size and Natural Environment
Engetsu Island is a relatively small island, measuring approximately 130 meters from north to south, 35 meters from east to west, and about 25 meters in height. Despite its modest size, it has a strong presence rising from the sea.
The surrounding waters are known for their relatively clear conditions and abundant marine life. Various sea creatures inhabit the area, including octopus and squid, adding to the natural richness of the coastal environment.
Engetsu Island at Sunset
One of Japan’s Most Beautiful Sunset Views
Engetsu Island is famous as one of the best places in the region to enjoy a sunset over the Pacific. Together with Shirahama Beach, it has been selected as one of the locations included in Japan’s “100 Best Sunset Spots.”
As the sun begins to set, the sky and ocean gradually turn shades of orange, pink, and red. The dark silhouette of Engetsu Island then emerges against the glowing horizon, creating an unforgettable scene.
The area becomes particularly popular with photographers and travelers around sunset. The island’s circular opening, changing colors of the sky, and reflection on the sea provide excellent opportunities for landscape photography.
A Special View Around the Equinoxes
One of the most remarkable sights can be observed around the spring and autumn equinoxes. During this period, the setting sun can appear to pass directly through the circular opening in the center of Engetsu Island.
This rare alignment creates a magical image in which the sun seems to fit perfectly inside the natural arch. The combination of the setting sun, ocean, and unusual rock formation creates a memorable experience that highlights the harmony between nature and the movement of the Earth and sun.
When to See the Sunset
The approximate sunset viewing time is around 6:30 p.m. in summer and around 4:30 p.m. in winter. The exact time changes throughout the year, so visitors should check the local sunset time in advance when planning a sunset visit.
Arriving a little before sunset is recommended. This allows time to find a good viewing position and enjoy the gradual transformation of the sky before the sun disappears below the horizon.
Ways to Enjoy Engetsu Island
Enjoy the View from Mifune Ashiyu Foot Bath
Mifune Ashiyu Foot Bath is a popular place from which to admire Engetsu Island. Visitors can soak their feet in a warm foot bath while relaxing and looking out toward the sea.
The foot bath is particularly appealing in the late afternoon. You can enjoy the relaxing warmth of the water while watching the setting sun illuminate the island. It is an ideal way to experience two of Shirahama’s attractions at the same time: hot springs and spectacular coastal scenery.
A Unique Experience During Low Tide
During a low tide around a spring tide, the water level can fall significantly, making it possible for adults to walk through the shallow water toward the area near the island under suitable conditions.
However, the rocks and seabed can be slippery, and the tide can rise quickly. Anyone attempting to approach the island should carefully check the tide conditions, stay away from dangerous areas, and prioritize safety at all times.
Combine Your Visit with Nearby Attractions
Engetsu Island is surrounded by several other popular attractions in Shirahama. Shirahama Beach and Senjojiki Rock Plateau are located nearby and can easily be included in the same sightseeing itinerary.
There are also numerous accommodations around Shirahama Onsen, allowing visitors to combine sightseeing with a relaxing stay at a traditional Japanese hot spring resort. A trip that includes coastal scenery, hot springs, local cuisine, and sunset views offers a wonderful introduction to the attractions of Nanki-Shirahama.
Safety and Environmental Considerations
Be Careful Around Unstable Rock
Because Engetsu Island is constantly exposed to waves, wind, and other natural forces, some parts of the rock formation have experienced erosion and deterioration. Visitors should therefore take care when walking around the coastline or viewing the island from nearby areas.
Never enter restricted or closed areas, even if they appear accessible. Coastal rocks can be unstable, and conditions can change depending on waves, weather, and tides.
Help Protect the Natural Landscape
Engetsu Island is a natural landmark that has been shaped over countless years. Preserving this scenery for future generations requires cooperation from everyone who visits.
Please take all rubbish with you, avoid damaging rocks or plants, and follow local signs and instructions. By respecting the natural environment, visitors can help ensure that the unique beauty of Engetsu Island remains for years to come.
Why Visit Engetsu Island?
Engetsu Island is a spectacular coastal landmark where the power of nature and the beauty of a Japanese sunset come together. Its most famous feature, the circular opening carved naturally into the rock, gives the island an appearance unlike almost anywhere else in Japan.
The sight becomes especially magical at sunset, when the island appears as a dark silhouette against the glowing sky. Around the spring and autumn equinoxes, the setting sun may appear directly through the opening, creating an extraordinary natural scene.
For international visitors, Engetsu Island is an excellent destination for experiencing Japan’s coastal landscapes, hot spring culture, nature photography, and peaceful sunset scenery. A visit can easily be combined with Shirahama Beach, Senjojiki, and a stay at a nearby hot spring resort.
When visiting Nanki-Shirahama, take time to watch the changing colors of the sky, listen to the sound of the waves, and admire the sun setting through the natural arch. The quiet beauty of Engetsu Island offers a memorable experience of Wakayama’s spectacular coastline.