The five villages had each run their own association. We brought them together because problems are arriving all at once that we cannot keep up with if each village thinks alone.
One of the darkest skies in the world, and an untouched coastline, still survive here. Not to hand them on as they are, but to hand them on with their value raised — that is the council's first purpose.
Each village keeps growing smaller.It has become difficult for a village on its own to make the community’s wishes heard, or to keep its events going.Coming together as a peninsula is also a practical way to keep living here.
There is not one large resort hotel on the peninsula. That is precisely why proposals come.While each village is approached separately, neither the landscape nor the night sky of the whole peninsula can be protected.
Developers and activity operators who come from elsewhere can sell up and move on when the returns stop. We do not blame them for that. But we, who inherited this land from those before us, cannot.We go on living here and hand this place to the children who follow. That is why we have a responsibility not to hand it on as it is, but to raise its value before we do.
A place on this peninsula where we can talk with a hundred years, a thousand years, in view.
Judging case by case, village by village, you cannot see any further than the case in front of you.We talk across the whole peninsula, in long units of time.That is what this council is for.
Not one thing. It is a single connected environment, from the night sky down to the sea. If one level gives way, the levels below it follow. That is why we protect the peninsula as a whole.
FROM THE STARS TO THE SEA
None of the five belongs to any one of the five villages. What separates them is not village but height and place. Night sky, air, forest, shore, sea. Between them the five watch this peninsula from top to bottom.
Ninufan
Never moves. Always there.
“The marker does not change.”
Brighten the highest place and everything below it goes wrong.
Washio
Circles once over the peninsula.
“From above, the peninsula is one.”
From the air you cannot see where one village ends.
Sagarin
Blooms at night, falls by morning.
“A brighter night throws off the hour of blooming.”
The signal to bloom is the darkness itself.
Yashirin
Travels between forest and sea.
“If it cannot cross the road, it cannot get back.”
It cannot live unless forest and sea stay joined.
Kamerin
Born on the beach, returns to the sea.
“A lit beach keeps the hatchlings from the sea.”
Light reaches all the way down to the lowest place.
The five are in different places.But they are connected.
Brighten the night sky and the forest flower blooms at the wrong hour, and the hatchlings on the beach cannot reach the sea. If forest and sea are not joined, what crosses the shore cannot return. When one gives way, the rest follow, top to bottom. Nature holds together by mutual support and balance.
And so we protect the whole peninsula, not village by village. That is why all five are looking out over it together.
So how much is that environment worth?We show it with measured figures, and with the peninsula by day.
Close to the theoretical limit for a natural sky.This is not an impression but an instrument reading. It can be compared on the same scale anywhere in the world. In an age when an ordinarily dark night has become valuable, it is still here.
There are other places in Japan with fine stars. But the sky over the Hirakubo Peninsula does not survive merely because few people live here.The shape of the peninsula itself keeps light out.
The peninsula joins Ishigaki Island through a startlingly narrow neck, and beyond it another world opens out over the sea like a natural bridge. At Funakuyā in Ibaruma, only 270 metres separate Nagata Beach on the Pacific side from Ibaruma Bay on the East China Sea side —boats were once carried across.
Because it is long, narrow and surrounded by sea, little light reaches it from outside, and the dark sky is preserved.
For exactly that reason, it matters that every village on the peninsula works together as one council.If even one area were to grow bright, the night sky of the whole peninsula could be lost very quickly.
Between the town of Ishigaki and the peninsula, the Omoto range — centred on Mount Omoto (526 m), the highest peak in Okinawa — lies across the island from east to west.The island's lights are blocked by that range and do not reach the peninsula.
See the readings taken at seven points along the length of Ishigaki Island
Late on 16 August 2026 and into the early hours of the 17th, sky brightness was measured at seven points along a north–south route across Ishigaki Island, using a Unihedron Sky Quality Meter. The further north from the town, the darker the sky — the gradient of light pollution shows clearly in a single night's readings.
| Location (north → south) | SQM mag/arcsec² |
|---|---|
| Nagareboshi-no-Oka observatory, Kūra | 21.86 / 21.89darkest reading of the night |
| Hirakubo Peninsula, Kūra | 21.82 / 21.85 |
| Ibaruma | 21.67 / 21.71 |
| Tamatorizaki lookout | 21.60 |
| Nosoko | 21.50 / 21.58 |
| Fukai / Yonehara | 21.24 |
| Nagura / Takeda | 19.36〜19.39affected by town light |
Between Nagura/Takeda near the town (just under 19.4) and the Hirakubo Peninsula (21.8s) there is roughly a ninefold difference in sky brightness (SQM is a logarithmic scale; a difference of 2.4 corresponds to nine times). The theoretical darkest value is about 22.0.The peninsula's 21.82–21.89 is the same level as the 21.7–22.0 reported from first-rank observing sites such as the Atacama, Mauna Kea and Tekapo.
Source: measurements by Nagareboshi-no-Oka (Hoshihaku LLC). See the full data and method ／ Measurement map
There is not one on the peninsula yet.That does not mean there is nothing here. It means the choice is still open.
A calendar of nature and daily life
Twelve months of stars, winds, crops, festivals and wildlife.View larger
What Mount Omoto blocks is only the light coming from outside the peninsula. There is no mountain to block light created inside it. The lighting of a single facility lowers the reading for the whole peninsula.
A single building can undo a condition the landform took two hundred million years to make. That is why the standard has to be the same across the whole peninsula.
The darkness of the night is only one of the things that survive here.By day, the peninsula is just as untouched.
The Hirakubo Peninsula Eco Road runs along the east coast from Ibaruma to Hirano at the northern tip.It is left largely unsealed for the sake of the landscape, and there are no street lights.On either side lie coast and forest that human hands have not worked.
Video: the Hirakubo Peninsula Eco Road (Ishigaki City official YouTube channel)
Much of the land and sea here lies within Iriomote-Ishigaki National Park. The 2016 extension added the sagaribana groves of Hirakubo and Kūra. This is also the only part of Ishigaki Island with a coconut crab protection area.
The night sky, the coast, the forest, the geology, and the life of five villages: all of it surviving together on one peninsula, not scattered — that is the value of this place.
This is not an exaggeration. If development begins with no standard in place, the value goes in this order.
Land is bought and sold village by village, and negotiated village by village. The terms change with every deal, and no standard survives for the peninsula as a whole.
No mountain blocks light created inside the peninsula. One non-compliant installation lowers the reading for all of it.Darkness, once lost, does not come back.
Once it becomes “an island beach like any other”, the only reason to choose it is price. From that point on, neither the community nor its businesses can compete on anything but discounts.
So we decided not to negotiate once development arrives, but to settle the standard for the whole peninsula before it does.
Five pieces of work, joined end to end.Agree among residents (the charter), draw up a plan with the national government (the interpretation plan), make an undertaking with operators (the agreement and certification), and finally put it into an ordinance.
Where a single standard applies, there is no risk of the neighbouring site being developed without restraint. Protecting the landscape and the dark of the night also protects the value of what an operator has invested here. We have no intention of shutting out those considering a project; we want to build value with those willing to work to the same standard.
Because the whole peninsula works to one standard, the landscape and the dark sky are maintained as a given condition of doing business.
Prior notification lets the points at issue be identified while the plan is still being drawn, which avoids opposition arising after work has begun.
As a certified operator you join a name the community is building, with a route from this site straight through to your bookings — value no single company can create alone.
We did not begin by demanding a law. The community first put its principles in writing and set up a scheme to certify the operators who share them.
The principles of this peninsula, agreed by five community associations, setting out in the community's own words what matters and how this place is used.
Read the charterOperators who share those principles and contribute to sustainable development are certified by the community itself. The mark is a signal for visitors choosing whom to book with.
See the scheme and the operatorsOn 15 May 2026 we met the Furusato Sōsei and Urban Construction divisions of Ishigaki City to discuss continuing the on-demand transport trial, the possibility of a community-run rideshare, and the possible use of corporate hometown tax donations to fund an event at the former Hirakubo school site.
Not a body for petitioning the administration, but a place where residents shape the future of their own area. The chair, Nobunari Arakaki, on why the council was set up that way, and on the rare asset that is Hirakubo's darkness at night.
On 29 July 2025 we submitted a formal request to Ishigaki City asking for a written reply on how the site of the former Hirakubo Elementary School will be used, and on 18 August the city replied.
The charter, the full draft of the ordinance, the motions and outcomes of the general meeting, the accounts for each year.Everything this council decides is published, without exception.A body that writes standards behind closed doors will not be trusted to write them.
When you spend time on this peninsula,choose an operator with the certification mark.That alone sends your money to someone who has agreed to the rules that keep this landscape.
A private observatory in Kūra: a night under a full sky, with live sanshin played on the spot.
Building the traditional Ryukyuan sabani in Kūra, and taking that boat out onto the sea off Hirakubo.
Trekking on horseback along near-empty beaches with Yonaguni horses, a native Japanese breed.
We are a residents' organisation of five villages, with limited hands and a limited budget. The greatest help is more people standing on the side of keeping this peninsula. Choose whatever you can do.
The surest form of support. Certified operators have agreed to meet the standard of this peninsula, and every such choice keeps that standard going.The council does not take bookings. Please book with the operator directly.
See the operatorsIt costs nothing. That one of the darkest skies in the world survives here, and that the people who live here are trying to keep it.The more people know, the stronger our position becomes when development is negotiated.Sending this page to someone is enough.
Read about the peninsulaOpen to individuals, organisations and companies based outside the peninsula (Rules, Art. 5). The fee is ¥10,000 a year, payable each April.
Membership requires an application, a nomination by a director or the secretariat, and a resolution of the board (Rules, Art. 6). Please get in touch and we will explain the steps. Fees are not refunded on withdrawal partway through a year.
Ask about supporting membershipFor companies: Ishigaki City has filed its regional revitalisation plan with the national government and is ready to receive corporate donations.A donation can reduce a company's tax burden by up to about 90% of the amount given (loss deduction and tax credit combined), and it goes directly towards revitalising the north of Ishigaki Island.
The scheme is administered by Ishigaki City. If your company is interested, we will make the introduction.
Ask about corporate hometown taxNote: this council is a voluntary association.Donations from individuals to this council are not eligible for income tax deductions or tax credits.How fees and donations are used is published in the annual accounts on the Records page.
Thank you for reading this far.
There are ways you can help.
A residents' organisation of the five community associations at the northern tip of Ishigaki Island — Hirano, Hirakubo, Kūra, Akaishi and Ibaruma. We welcome enquiries about supporting membership, corporate hometown tax, site visits, press and the certification scheme.
