[Iharama Sabichi Cave] Explore a Unique Power Spot, Where a Limestone Cave Meets the Sea

Located on Ishigaki Island, Iharama Sabichi Cave stands out as a truly unique limestone cave. What sets it apart? It’s the only cave in Japan that opens directly to the sea! Wander through the cave’s mystical, otherworldly passages, and as you emerge from the darkness, you’ll be greeted by the dazzling sight of a crystal-clear ocean. Relive the excitement of childhood as you explore the coastline, marvel at intriguing rock formations, and soak in the breathtaking scenery of pristine beaches.

1. What is Ibaruma Sabichi Cave?

Known as a "cave that leads to the sea," Ibaruma Sabichi Cave (Sabichi Limestone Cave) is a limestone cave that formed about 370 million years ago, during the time Ishigaki Island was created by seafloor uplift.

The main cave is approximately 237 meters long. It is a horizontal through cave located on the western coast of the Nosoko Peninsula in northeastern Ishigaki Island.

In addition to enjoying stalactites, stalagmites, dripstones, cave coral, and helictites, it is an archaeologically valuable site where fossils of tabulate coral and giant clams that lived in ancient seas have been unearthed.

The cave is also gaining attention as a spiritual site with a pond inhabited by giant eels and a rock said to house a deity! Moreover, it is recommended as an intriguing tourist destination where you can not only explore the cave but also admire historical traditional crafts.

Although in terms of scale, the "Ishigaki Island Limestone Cave" is far larger and more impressive, Sabichi Cave offers a quick round trip of about 20 minutes, making it an accessible adventure filled with excitement. Its unique feature of leading to the sea and the stunning coastal scenery visible only after traversing the cave are its major attractions.

2. The Entrance to Sabichi Limestone Cave

As you approach the entrance of Sabichi Cave, you’ll be greeted by the resident shop cats—local favorites who even have kittens! They’re a delightful addition to the experience.

It’s rumored that the pond at the cave entrance is home to a giant eel! While I have not seen it myself and remain skeptical, reports of sightings have lent credibility to the rumor. You might just catch a glimpse, so it’s worth checking before entering the cave.

3. Highlights Inside the Sabichi Cave

Inside the limestone cave, you’ll find a spacious area with ceilings exceeding 10 meters in height. The giant stalactites hanging from the high ceilings and the large number of corals are must-see highlights. Some of the formations include fossils of ancient shells and corals, so take a closer look and observe carefully.

As you explore, enjoy the areas named “Niagara Falls,” “Parthenon Temple,” and “Sphinx” while proceeding cautiously to avoid slipping.

One unique feature of Sabichi Cave is the space exhibiting items not typically found in limestone caves. These include artworks, jishigami urns, salted pork called sūchikigami, and Yaeyama-yaki jars used for aging awamori.

4. Beyond the Cave Lies the Sea!

After walking for about 10 minutes in the dim cave, you’ll gradually hear the sound of waves and smell the scent of the sea. As you exit, the dim cave suddenly gives way to a stunning view of the bright ocean! The emerald-green sea stretches as far as the eye can see, offering an overwhelming sense of freedom.

The paths diverge to the left and right, and you can explore in either direction. Each path offers entirely different scenery and atmosphere, so be sure to check out both!

5. [Right Course] The Coastal Line of Strange Rocks

The right course, which stirs the adventurous spirit, takes you along a coastal line filled with unusual rock formations. As you walk between massive rock walls, you’ll eventually reach a staircase!

At high tide, it becomes submerged, but when the tide recedes, a sandy beach appears, allowing you to walk along the coastline.

As you progress along the rugged coastline dotted with strange rocks, you'll come across a turtle-shaped rock that is famous as a power spot believed to bring happiness.

If you go further beyond the turtle rock, you'll encounter yet another breathtaking view!

The right course, offering exhilarating and spectacular scenery, is highly recommended. However, during high tide, the sandy beach sinks beneath the water’s surface, so it’s best to visit during low tide for the best experience.

6. [Left Course] A Walk Along the Pathway to a Beautiful Beach

Climbing the stairs and walking along the pathway will take you towards the area with beautiful beaches.

As you stroll along the well-maintained path, you’ll find several beaches scattered around. These beaches are quiet and sparsely populated, almost as if you’re on a deserted island. You can enjoy a tranquil, private-beach-like atmosphere all to yourself.

With plenty of rock shadows and tree shades, you can sit on the rocks and spend time peacefully. Trumpet lilies also grow naturally in the area, letting you immerse yourself in nature to your heart’s content. Occasionally, you may find coconut crabs or irabu sea snakes washed ashore, and observing them can also be an enjoyable activity.

7. Access and Parking

There’s a signboard on Prefectural Route 206 that says “Sabichi Limestone Cave,” so you shouldn’t have trouble finding it. Follow the sign and take the road opposite the sea; after driving along the road for a while, you’ll arrive at a free parking lot.

If you’re using a rental car, it takes a little over 20 minutes from New Ishigaki Airport and about 40 minutes from the remote island terminal or Ishigaki city center.

For public transportation, get off at the nearest "Ibaruma" bus stop and walk about 20 minutes north.

◎Check the Tide Chart! Aim for Low Tide

Ibaruma Sabichi Cave is the only limestone cave in Japan that leads out to the sea. Walking through the cave reveals a breathtaking view of crystal-clear waters spreading across your vision.

However, as mentioned, stopping there and turning back would be a waste! Be sure to explore the beautiful beach and the power-spot rock formations nearby. While you can visit even when it’s not low tide, it’s best to go when the tide is out. Check the tide chart and plan your sightseeing schedule accordingly.

The inside of the cave can have areas with pooled water and slippery spots, so wearing sandals with non-slip soles is recommended. Even if you don’t plan on entering the sea, it’s a good idea to wear or bring sandals so you can explore the coastline after exiting the cave. If you don’t have any, consider asking at the reception if they can lend you a pair.