[2026 Latest] Top 3 Ranking of Paranormal Rumors Related to Waterfronts (Waterfalls, Lakes, Dams, and the Sea) in Northern Kyushu

In the waterfront areas of northern Kyushu, there are rumors of paranormal activity set in diverse environments such as sea caves, castle moats, and dam lakes. In this article, we selected three locations in Saga Prefecture and cross-referenced claims written on user-submitted rumor pages with records from tourist associations, facility managers, and publicly available geographical data. The mere presence of a rumor does not necessarily mean that the strange occurrence or incident is factual.

Survey methods and evaluation criteria

We categorized the rumor pages into claim units—date, time, location, event, structure, and eyewitness accounts—and compared them with descriptions in independent official, administrator, and public databases. The results are categorized into five groups: "Agreement," where all claims are supported; "Partial Agreement," where there is a mix of support and unconfirmed information; "Disagreement," where independent sources indicate contradictory facts; "Unmeasurable," where there is no directly comparable data; and "New Facts," where the comparison results are inconclusive but important mechanisms or origins not found in the rumor have been revealed. Agreement solely on location is not counted as evidence of a paranormal phenomenon. The rankings and scores are not based on fear or truthfulness, but rather on an evaluation of the quality of the materials, consisting of source transparency, historical and spatial context, safety information, recency of information, and source transparency of the rumor.

1st Place: Nanatsugama | New Facts (91 points)

The rumored details

The page containing the rumors states that Nanatsugama is haunted by the ghost of a woman and that people continue to throw themselves into the water. It also mentions that after a woman was reportedly seen jumping, her body was not found in a search the following day. However, these are rumors from a user-submitted page and not confirmed by independent sources.

Source of the rumor and date of verification

The Nanatsugama page on the National Haunted Map was checked on September 16, 2026. This page is a secondary listing, displaying an update date of March 5, 2026. The original narrator of the rumor, the initial publication medium, and the method of obtaining each eyewitness account cannot be determined from the page text.

• Nationwide Haunted Map "Nanatsugama"(Verification date: 2026-09-16) — It states that "a female ghost appears," "it is a tourist spot in Saga, but also a suicide spot," and "people continue to jump off the cliffs."

Things that could be confirmed from official and primary source materials

The Karatsu Tourism Association guides visitors to Nanatsugama as a group of sea caves designated as a national natural monument, explaining that the caves were formed by erosion of basalt by waves in the Genkai Sea, and that the columnar jointing was caused by the cooling and contraction of lava. The Nanatsugama cave system was formed by erosion of basalt by waves in the Genkai Sea, and the columnar jointing is a structure created by the cooling and contraction of lava. Nominatim's publicly available geographical data records Nanatsugama in Karatsu City at 33.5489629 N, 129.9319578 E. These records do not confirm any sightings of spirits or repeated suicides.

• Karatsu Tourism Association "Nanatsugama"(Confirmed on 2026-09-16) — Nanatsugama is designated as a national natural monument and was formed by the erosive action of waves in the Genkai Sea on basalt. The columnar jointing on the rock surface is explained as being caused by the contraction that occurs when the lava cools and solidifies.
• Nominatim publicly available geographic data "Nanatsugama"(Verification Date: 2026-09-16) — The name is returned as Nanatsugama, the location as Karatsu City, Saga Prefecture, and the coordinates as 33.5489629N, 129.9319578E.

Points of agreement/contradictions

The claims regarding the rumored female ghost, repeated suicides, and the failure to find a body during searches could not be directly compared using the tourist association documents and publicly available geographical data. However, the tourist association's explanation revealed that the cave's darkness and the topography that produces the sound of waves are due to specific formation mechanisms: columnar jointing of basalt and marine erosion.

The rumored atomic claim	Matching results	reason	Corresponding documents
A female ghost appears	Unconfirmed	The independent sources obtained deal with geology and tourist information and do not include any records confirming or denying sightings of a female ghost.	No official data available for direct comparison.
People continue to throw themselves into the water.	Unconfirmed	The rumors are described as recurring events, but the frequency, duration, and supporting public records are not provided, and they cannot be verified with the available materials.	No official data available for direct comparison.

Alternative interpretation

The echoes within the cave, the sound of waves from the Genkai Sea, the complex columnar jointing, and the sudden changes in light and shadow may enhance the impression of unease or the presence of human figures. However, based solely on this information, it is not possible to definitively conclude that the individual sightings were natural phenomena.

Scope and limitations of the investigation

The scope of our verification is limited to the rumored pages, the Karatsu Tourism Association's information, and Nominatim's location records. We have not comprehensively investigated individual incident records from the police, fire department, or coast guard, and we cannot determine the dates and times of the rumored sightings or searches, so we cannot confirm whether the events actually occurred.

Verification results: New facts

The claims of paranormal phenomena and repeated suicides lack supporting evidence and clear counter-evidence, making direct comparison impossible. However, the Karatsu Tourism Association's materials provided concrete information about the formation mechanisms of sea caves and columnar joints, which were not explained on the rumor page. This discovery is not proof of the paranormal activity, but rather new information for understanding the physical background that creates the darkness, depth, and echoes of the place.

Document Quality Score

Source transparency	29/30	Rumor pages, tourist associations, and publicly available geographical data can be accessed directly via individual URLs, and their respective roles are clearly defined.
Historical and spatial context	23/25	There is an official explanation that includes details about the site's unique formation process, such as its designation as a natural monument, basalt formation, marine erosion, and columnar jointing.
Safety information	17/20	This allows you to check the topography of sea caves and coastlines, as well as the operating conditions for sightseeing boats, and to specify precautions to take at the water's edge.
Newness of information	13/15	Each page was retrieved again on September 16, 2026, but the exact timing of the origin of each rumor cannot be determined.
Transparency of the source of rumors	9/10	While the rumor text and update date can be found, the original source, poster, and method of collecting eyewitness information remain unknown.
total	91/100	This is the overall quality of the materials. It does not represent the degree of truthfulness or danger associated with the supernatural phenomena.

Safety information and maps

Do not approach cliffs, sea caves, or the water's edge at night. Prioritize access restrictions, weather, wave conditions, and sightseeing boat schedules. Stay within the designated viewing areas and do not cross fences or enter caves on your own.

Check the area around Nanatsugama on Google Maps.

2nd Place: Saga Castle Park (Soap Bubble Park) | Unmeasurable (85 points)

The rumored details

The user-submitted rumor page states that there have been "no ghost sightings or paranormal phenomena" at Saga Castle Park (Soap Bubble Park), but explains that it is called a haunted spot due to its eerie atmosphere. It also mentions that "three suicides have been confirmed there," but the page itself includes a disclaimer stating that it lacks primary source information and contains unconfirmed content.

Source of the rumor and date of verification

I checked the Saga Castle Park (Soap Bubble Park) page on the National Haunted Map on September 16, 2026. The registration date on the page is February 14, 2023. The contributor, the period for compiling the number of people (3), its correspondence with official records, and the original publication medium are not specified.

• Nationwide Haunted Map: Saga Castle Park (Soap Bubble Park)(Date confirmed: 2026-09-16) — While stating that "there have been no reports of ghost sightings or paranormal phenomena," it also mentions that "for some reason, three suicides have been confirmed," and includes a note acknowledging the lack of primary source information.

Things that could be confirmed from official and primary source materials

The website for the designated manager of Saga Castle Park lists the Saga Castle Park Management Office as being located in Jonai 1-chome, Saga City, and includes links to a map of dangerous areas within the park and the Saga City Hazard Map. It also publishes information on the blooming of lotus flowers in the south moat, confirming that it is a managed park that includes the waterfront. In Nominatim's publicly available geographical data, the location of Shabon-dama Park, which is the target of Saga Castle Park (Shabon-dama Park), is recorded as 33.2439609N, 130.2985809E. The manager's website does not contain any descriptions confirming the number of people rumored to be there or any paranormal phenomena.

• Saga Castle Park Official Website(Date confirmed: 2026-09-16) — Saga Castle Park Management Office, 1-10-11 Jonai, Saga City, Saga Prefecture 840-0041. This page provides information on dangerous areas and the Saga City Hazard Map, as well as information on the blooming of lotus flowers in the South Moat.
• Nominatim publicly available geographical data: "Soap Bubble Park"(Verification Date: 2026-09-16) — The name is returned as Soap Bubble Park, the location as Saga City, Saga Prefecture, and the coordinates as 33.2439609N, 130.2985809E.

Points of agreement/contradictions

The rumor page itself states that there are no ghost sightings or paranormal phenomena, yet it designates the place as a haunted spot due to its eerie atmosphere. The evaluation criteria do not match. While the administrator's documents confirm the park, the South Moat, and safety information, they do not address the number of people (3) or individual cases, so the central part of the rumor cannot be supported or refuted.

The rumored atomic claim	Matching results	reason	Corresponding documents
There have been no reports of ghost sightings or paranormal activity.	Unconfirmed	The administrator's documents deal with park management and are not intended to investigate or confirm the presence or absence of paranormal phenomena.	No official data available for direct comparison.
For some reason, three suicides have been confirmed.	Unconfirmed	The rumor page lacks corresponding dates, official announcements, news reports, and counting periods, making it impossible to verify the number of people from independent sources.	No official data available for direct comparison.

Alternative interpretation

The surface of the moat, the shadows cast by the trees, and the quietness during closing hours may be perceived as subjectively eerie. However, the impression of the atmosphere cannot replace records indicating the number of incidents or paranormal phenomena.

Scope and limitations of the investigation

The administrator page we checked contains park management and safety information, not incident logs from the police or medical institutions. Since the names, dates, locations, news reports, and official announcements corresponding to the rumored "three people" are not provided, we cannot determine the accuracy of the number.

Verification result: Unmeasurable

While the park, moat, managing entity, and coordinates were confirmed, these do not support the number of paranormal phenomena or rumored incidents. The rumor page also explicitly states a lack of primary source information, and the administrator documents obtained do not contain any records that directly confirm or deny the number of three people. Therefore, the existence confirmation was not upgraded to partial agreement and was instead classified as unmeasurable.

Document Quality Score

Source transparency	28/30	We were able to directly obtain information from rumor pages, designated administrator sites, and publicly available geographical data, thus separating the roles of the information.
Historical and spatial context	18/25	While the management status of Saga Castle Park and the South Moat can be confirmed, the origin of the rumor remains unknown.
Safety information	18/20	The administrators directly provide information on hazard maps and the city's hazard maps, making the verification process clear.
Newness of information	13/15	I checked the administrator's update information up to 2026, but I couldn't find a timeline that corresponds to the rumored number of people.
Transparency of the source of rumors	8/10	While the publication date and text can be verified, the records that serve as the basis for the poster, first appearance, and number of people are not provided.
total	85/100	This is the overall quality of the materials. It does not represent the degree of truthfulness or danger associated with the supernatural phenomena.

Safety information and maps

Do not enter the edges of moats and waterways, planted areas, or managed areas. Check the local hazard signs and the Saga City hazard map. Avoid nighttime noise and prolonged stays, and do not enter closed areas or areas inside fences.

Check the area around Saga Castle Park (Soap Bubble Park) on Google Maps.

3rd Place: Kitayama Dam | Measurement Undetermined (74 points)

The rumored details

The rumor-posting page states that Kitayama Dam "has long been famous as a suicide spot," and that a female ghost appears in the "Tunnel of Happiness" near Kitayama Campsite, the ghost of a boy with only his upper body visible in the "Cycle Tunnel" near the observation deck, and the ghost of a person who hanged themselves in the parking lot. All of these are rumors posted on the same page.

Source of the rumor and date of verification

I checked the Kitayama Dam page on the National Haunted Map on September 16, 2026. The page compiles multiple sightings from different locations into a single article, but it does not indicate the original source, date and time of sighting, narrator, recording method, or correspondence with official documents for each.

• National Haunted Map: Kitayama Dam(Verification Date: 2026-09-16) — It states that "it has long been famous as a suicide spot," and lists the ghosts of a woman in the Kofuku Tunnel, a boy in the Cycle Tunnel, and a parking lot.

Things that could be confirmed from official and primary source materials

Nominatim's publicly available geographical data records Kitayama Dam as a dam classified as a waterway located in Saga City, Saga Prefecture, with its representative coordinates set to 33.4336761°N and 130.2370640°E. While this allows us to confirm the location and map coordinates of Kitayama Dam, it does not provide records to confirm the sightings in the tunnels and parking lot mentioned in the rumors, the repeated suicides, or the type of spirits involved. The publicly available data that we were able to directly obtain does not contain any descriptions that confirm or deny these events.

• Nominatim publicly available geographical data: "Kitayama Dam"(Verification Date: 2026-09-16) — Kitayama Dam is recorded as a dam in Saga City/Saga Prefecture, and its coordinates are returned as 33.4336761°N and 130.2370640°E.

Points of agreement/contradictions

While the location and coordinates of Kitayama Dam could be confirmed using publicly available geographical data, the existence of the location does not support the rumored paranormal activity. The rumored reputation as a suicide spot, the female ghost, the male ghost, and the parking lot ghost all involve different subjects and claims. Since there are no directly comparable incident records or eyewitness accounts in the acquired materials, all claims have been left unconfirmed.

The rumored atomic claim	Matching results	reason	Corresponding documents
It has long been known as a suicide spot.	Unconfirmed	The acquired materials lack independent public records indicating repetition, duration, and number of occurrences, and the existence of a physical location alone cannot support this claim.	No official data available for direct comparison.
In the "Tunnel of Happiness," there is a female ghost.	Unconfirmed	There is no formal correspondence between the designation and the target structure, no date and time of sighting, and no independent records, making it impossible to cross-reference with publicly available geographical data.	No official data available for direct comparison.
In the "Cycle Tunnel," there is the ghost of a boy, only his upper body visible.	Unconfirmed	Aside from the rumor page, there is no independent source that directly deals with the subject and the eyewitness accounts, making it impossible to definitively support or refute them.	No official data available for direct comparison.

Alternative interpretation

Around the dam lake, sounds such as water noise, wind, echoes, areas without lighting, and footsteps can create unclear perceptions. However, since the specific dates, times, and environmental conditions of each experience are not provided, it cannot be definitively stated that each rumored experience can be explained by natural phenomena.

Scope and limitations of the investigation

The scope of our verification was limited to the rumored pages and Nominatim's public location records. We were unable to determine from independent sources whether the names "Tunnel of Happiness" and "Cycle Tunnel" mentioned in the rumors are official management names or which structures they refer to, nor were we able to obtain any official records regarding the date and time of the incident.

Verification result: Unmeasurable

While the location and coordinates of Kitayama Dam were confirmed, this does not constitute evidence supporting any paranormal phenomena or incidents. The rumors combine multiple structures and eyewitness accounts, but independent sources fail to uniquely link each object, resulting in neither support nor refutation. Therefore, we determine that it is impossible to measure.

Document Quality Score

Source transparency	22/30	While we were able to directly verify the rumor text and publicly available geographical data, we were unable to obtain detailed records from the facility manager.
Historical and spatial context	16/25	While the location and geographical extent of the dam can be confirmed, the time when the rumor originated and the official names of each structure remain unknown.
Safety information	17/20	While we can gather environmental information regarding the dam lake and surrounding structures, we have not yet obtained any site-specific management notices.
Newness of information	11/15	I retrieved both pages again on September 16, 2026, but there are no verifiable dates for the rumored individual experiences.
Transparency of the source of rumors	8/10	While the specific location and eyewitness accounts of the rumor are described, the source, narrator, and verification method are not indicated.
total	74/100	This is the overall quality of the materials. It does not represent the degree of truthfulness or danger associated with the supernatural phenomena.

Safety information and maps

Do not enter the waterfront of the dam lake, management facilities, or closed pathways and tunnels, and avoid exploring at night. Prioritize local traffic restrictions, fences, and signs posted by administrators, and use only designated areas for parking and camping.

Check the area around Kitayama Dam on Google Maps.

What I learned by crossing locations

What the three locations have in common is that impressions of the darkness and depth of the waterfront and the stillness of the night are described separately from records confirming any events or strange occurrences. At Nanatsugama, we were able to confirm the formation mechanism of the sea cave from official documents, but we could not confirm any sightings of spirits or claims of repeated suicides. At Saga Castle Park, we were able to confirm management information and the existence of the moat, and at Kitayama Dam, we were able to confirm the location and coordinates, but we could not obtain any materials that would allow us to directly verify the number of incidents or the details of the sightings for each rumor.

summary

The information we were able to confirm from this document includes the geological formation mechanism of Nanatsugama, management information for Saga Castle Park and the South Moat, and the location of Kitayama Dam in publicly available geographical data. We were unable to find any independent documents to support the paranormal phenomena or the number of incidents mentioned in the rumors, and therefore those parts cannot be treated as fact. If you visit the site, please do not enter dangerous waterfront areas, cliffs, or managed areas for the purpose of verifying the rumors, and prioritize visiting public areas and following the guidance of the administrators during daylight hours.

FAQ

Does "unmeasurable" mean the rumor is false?

No. "Unmeasurable" simply means that the independent sources we reviewed could neither support nor refute the rumored claims. We did not determine it to be inconsistent solely because it was not mentioned in the sources.

Does the ranking score represent the intensity of the paranormal activity?

We do not display scores. The scores only evaluate the quality of the materials that can be used as verification articles, such as clarity of sources, context of location, safety information, and update status.

If an incident is mentioned on a rumors page, does that mean it's true?

Simply posting information on a rumor page does not constitute fact. Details such as the incident, date, and number of people involved must be verified against independent sources that directly address the claim, such as official records or administrator documents.

Is it possible that the information will be updated in the future?

Yes, it is possible. The conclusion may change if administrator announcements or public records are added. This article was last updated on September 16, 2026, and does not include any updates since then.