This article examines the Sado Gold Mine, Matsushiro Elephant Mountain Underground Bunker, and Shinpu Castle Ruins, comparing rumors published externally with information released by local governments and administrators. The listing of a location as a haunted spot, its existence, and the occurrence of individual paranormal phenomena are not the same thing. This article presents the information provided by each source and the extent to which verification is not possible for each location.
Survey methods and evaluation criteria
We cross-referenced external listings for each location with individual official and administrative documents, as well as features and coordinates on OpenStreetMap. Secondary listings are used as examples of narrative dissemination, while official documents serve a different role as location, history, and facility information. AI-generated scene illustrations are for editing purposes to represent the atmosphere and are not used as evidence of the actual appearance of the location or events.
| Rank | point | The main points of the rumor | judgement | Document quality |
|---|---|---|---|---|
| 1 | Sado Gold Mine Historic Site | Regarding the Sado Gold Mine historical site, the designated individual listing describes it as a haunted spot in Niigata Prefecture. What can be confirmed is the existence of listings in that category, and the text of the listing... | Undeterminable | 76/100 |
| 2 | Shinfu Castle Ruins | The designated individual listing introduces Shinfu Castle Ruins as a haunted spot in Yamanashi Prefecture. The listing confirms the name of the location where the rumors are presented, and whether the events described there are supported by historical documents or administrative records… | Undeterminable | 76/100 |
| 3 | Matsushiro Zozan Underground Bunker | The specified individual listing is a page with a title that treats the Matsushiro Zozan underground bunker as a haunted spot in Nagano Prefecture. The existence of the page merely indicates the spread of rumors, and the alleged incidents that occurred in the bunker… | Undeterminable | 76/100 |
1st Place: Sado Gold Mine Historic Site | Undecided (76 points)
The rumored details
Regarding the Sado Gold Mine historical site, the designated individual listings describe it as a haunted spot in Niigata Prefecture. The only thing that can be confirmed is the existence of listings in that category; this does not mean that the events described in the listings have been confirmed by official or academic sources. This paper examines whether there are documents that can be said to indicate that "supernatural occurrences actually happened" and records that can be said to indicate that "the phenomena were repeatedly observed." This is not a quotation of the wording of secondary publications, but rather a distinction made based on the conditions necessary for factual determination.
Source of the rumor and date of verification
We compared information about the Sado Gold Mine using two sources: official documents from facilities showcasing industrial heritage, and external listings about it as a haunted spot. The fact that it's a historically significant facility doesn't automatically mean that individual accounts from the past are accurate.
- Sado Gold Mine | Sado Kinzan – A haunted spot in Niigata Prefecture(Confirmed on 2026-09-11) — The title of the individual page is "Sado Gold Mine | Sado Kinzan - A haunted spot in Niigata Prefecture". Confirmed as a secondary publication of rumors that mentions a place name.
Things that could be confirmed from official and primary source materials
The official website of the Sado Gold Mine historical site directly provides visitor information, including course tours, guides, and maps. Official documents provide information about the historical site and visitor information, not records of paranormal events. The official guide is for describing the location and providing information for use, and is not an observational report verifying individual anomalies.
- Sado Gold Mine Historic Site | Official Website(Verification Date: 2026-09-11) — Official visitor information for historical sites, including course tours, guides, and maps.
Points of agreement/contradictions
The publication of rumors, official guides to historical sites, and the mining area of OSM are all addressed under the Sado Gold Mine in Sado City. The existence of historical sites and visitor information are not used as proof of the rumored story. Each source is not treated as supporting evidence for a different claim beyond its intended purpose.
| The rumored atomic claim | Matching results | reason | Corresponding documents |
|---|---|---|---|
| A supernatural phenomenon actually occurred. | Unconfirmed | The official website is intended for tours and guided visits to historical sites, and is not a resource for verifying secondhand accounts. Since there are no independent records of events, the existence of the historical sites should not be used as proof of rumors. | No official data available for direct comparison. |
| The phenomenon was observed repeatedly. | Unconfirmed | The official website is intended for tours and guided visits to historical sites, and is not a resource for verifying secondhand accounts. Since there are no independent records of events, the existence of the historical sites should not be used as proof of rumors. | No official data available for direct comparison. |
Alternative interpretation
The impression of mine shafts and ruins can change depending on lighting, the shape of the space, the acoustics, and knowledge of history. However, since the tourist information for the Sado Gold Mine is not an experiment to investigate the causes of personal accounts, these cannot be considered definitive explanations for rumors.
Scope and limitations of the investigation
The scope of verification includes the titles of individual listings, the visitor information on the official website, and OSM anchors. The original source of the rumor, the original records of visitors, the circumstances at the time, and independent observations of the phenomenon have not been verified.
Verification result: Indeterminate
The official website is intended for tours and guided visits to historical sites, and is not a resource for verifying secondhand accounts. Since there are no independent records of events, the existence of the historical sites should not be used as proof of rumors.
Document Quality Score
| Source transparency | 27/30 | I recorded the URLs, confirmation dates, and scope of explanations separately for external individual postings and official announcements. |
|---|---|---|
| Historical and spatial context | 16/25 | While there is a description of the location in official documents, the first occurrence of the supernatural phenomenon and the primary testimonies have not been confirmed. |
| Safety information | 15/20 | When visiting the Sado Gold Mine, please check the facilities' open routes, operating hours, fees, and restricted areas beforehand. Do not enter tunnels or ruins without permission from the management, respect historical materials and local warning signs, and avoid exploring in dark areas. |
| Newness of information | 12/15 | The acquisition record from September 11, 2026, has been saved. This does not represent confirmation of the latest situation through on-site visits. |
| Transparency of the source of rumors | 6/10 | We compared information about the Sado Gold Mine using two sources: official documents from facilities showcasing industrial heritage, and external listings about it as a haunted spot. The fact that it's a historically significant facility doesn't automatically mean that individual accounts from the past are accurate. |
| total | 76/100 | 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
When visiting the Sado Gold Mine, please check the facilities' open routes, operating hours, fees, and restricted areas beforehand. Do not enter tunnels or ruins without permission from the management, respect historical materials and local warning signs, and avoid exploring in dark areas.
Check the historical site around Sado Gold Mine on Google Maps.
2nd Place: Shinfu Castle Ruins | Undecided (76 points)
The rumored details
The designated individual listing introduces Shinfu Castle Ruins as a haunted spot in Yamanashi Prefecture. The listing confirms the name of the place where the rumor is introduced, not whether the events described there have been confirmed in historical or administrative documents. This article examines whether there are documents that can be said to indicate that "supernatural occurrences actually happened" and records that can be said to indicate that "the phenomena were repeatedly observed." This is not a quote from the secondary publisher, but rather a separation of the conditions necessary for factual determination.
Source of the rumor and date of verification
Regarding the rumors about the Shinfu Castle ruins, we directly accessed individual external entries listing the historical site name and cross-referenced its location with tourist information for Nirasaki. This analysis is based on the premise that historical events and the existence of historical sites should not be reinterpreted as proof of the currently reported supernatural occurrences.
- Shinpu Castle Ruins | Shinpujoseki - A haunted spot in Yamanashi Prefecture(Confirmed on 2026-09-11) — The title of the individual page is "Shinpu Castle Ruins | Shinpujoseki - A haunted spot in Yamanashi Prefecture". Confirmed as a secondary publication of rumors that mentions the location name.
Things that could be confirmed from official and primary source materials
The Nirasaki City Tourism Association's official page provides individual information about the Shinpu Castle ruins, describing them as the site of a castle built by Takeda Katsuyori in 1581. This information only confirms the location of the historical site and provides historical context; it does not verify the rumored events. The official guide is for describing the location and providing information for use, not an observational report verifying any individual anomalies.
- Shinfu Castle Ruins / Nirasaki City Tourism Association(Verification date: 2026-09-11) — The Nirasaki City Tourism Association's individual page describes it as the site of a castle built by Takeda Katsuyori in 1581.
Points of agreement/contradictions
The individual listings of rumors, the Shinfu Castle Ruins guide from the tourism association, and the OSM nodes all correspond to the same castle ruins in Nirasaki City. The historical site's history is not used as evidence for the presented bizarre claims. Each document is not treated as supporting evidence for another claim beyond its intended purpose.
| The rumored atomic claim | Matching results | reason | Corresponding documents |
|---|---|---|---|
| A supernatural phenomenon actually occurred. | Unconfirmed | The tourist association's materials explain the history and guidance of the historical site, and are not intended to test the secondary publication of personal accounts. Independent records with dates and observation conditions are lacking. | No official data available for direct comparison. |
| The phenomenon was observed repeatedly. | Unconfirmed | The tourist association's materials explain the history and guidance of the historical site, and are not intended to test the secondary publication of personal accounts. Independent records with dates and observation conditions are lacking. | No official data available for direct comparison. |
Alternative interpretation
The topography of a historical site, the shadows cast by trees, and the history passed down through oral tradition are all factors that can influence how a place is perceived. The current materials on the Shinfu Castle ruins do not allow us to recreate the specific circumstances of individual experiences, and even if we list general possibilities, we will not use them as a basis for determining whether or not supernatural occurrences occurred.
Scope and limitations of the investigation
The scope of verification includes the titles of individual listings, the individual pages on the Nirasaki City Tourism Association website, and the location on OpenStreetMap (OSM). The original source of the rumor, the original testimonials, dates, on-site conditions, and independent event documents were not verified.
Verification result: Indeterminate
The tourist association's materials explain the history and guidance of the historical site, and are not intended to test the secondary publication of personal accounts. Independent records with dates and observation conditions are lacking.
Document Quality Score
| Source transparency | 27/30 | I recorded the URLs, confirmation dates, and scope of explanations separately for external individual postings and official announcements. |
|---|---|---|
| Historical and spatial context | 16/25 | While there is a description of the location in official documents, the first occurrence of the supernatural phenomenon and the primary testimonies have not been confirmed. |
| Safety information | 15/20 | Visitors to the Shinfu Castle ruins should respect the preservation of the historical site and adhere to the guidelines for normal walking. Please check the conditions of restricted access, walking paths, and stairs on-site, and do not forcibly enter slopes or grassy areas. Nighttime exploration and contact with the ruins are not recommended. |
| Newness of information | 12/15 | The acquisition record from September 11, 2026, has been saved. This does not represent confirmation of the latest situation through on-site visits. |
| Transparency of the source of rumors | 6/10 | Regarding the rumors about the Shinfu Castle ruins, we directly accessed individual external entries listing the historical site name and cross-referenced its location with tourist information for Nirasaki. This analysis is based on the premise that historical events and the existence of historical sites should not be reinterpreted as proof of the currently reported supernatural occurrences. |
| total | 76/100 | 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
Visitors to the Shinfu Castle ruins should respect the preservation of the historical site and adhere to the guidelines for normal walking. Please check the conditions of restricted access, walking paths, and stairs on-site, and do not forcibly enter slopes or grassy areas. Nighttime exploration and contact with the ruins are not recommended.
3rd Place: Matsushiro Zozan Underground Bunker | Undecided (76 points)
The rumored details
The specific listing in question is a page that describes the Matsushiro Zozan underground bunker as a haunted spot in Nagano Prefecture. The existence of the page merely indicates the spread of rumors and does not serve as a record confirming any events allegedly that occurred in the bunker. This paper will examine whether there are documents that can be said to indicate that "supernatural occurrences actually happened" and records that can be said to indicate that "the phenomena were repeatedly observed." This is not a quote from the secondary publisher, but rather a separation of the conditions necessary for factual determination.
Source of the rumor and date of verification
I read individual rumors about the Matsushiro Zozan underground bunker alongside descriptions of the publicly accessible sections and facilities in tourist guides. I did not use a list of search results as the source, but rather selected the pages corresponding to the locations, and this does not mean that I have verified the primary testimonies of the rumors.
- Matsushiro Zozan Underground Bunker – A haunted spot in Nagano Prefecture(Confirmed on 2026-09-11) — The title of the individual page is "Matsushiro Zozan Underground Bunker | Matsushiro Zozan Chikago - A haunted spot in Nagano Prefecture". Confirmed as a secondary publication of rumors that mentions the location name.
Things that could be confirmed from official and primary source materials
The Shinshu Matsushiro Tourism Association guides visitors to the "Elephant Mountain Underground Bunker (Matsushiro Imperial Headquarters Underground Bunker)" as a separate spot. The official documents confirm the historical location of the underground bunker and do not address the veracity of the rumored experiences. The official guide provides information on the location and its use, and is not an observation report verifying any individual anomalies.
- Zozan Underground Bunker (Matsushiro Imperial Headquarters Underground Bunker) | Shinshu Matsushiro Tourism Association(Confirmed on 2026-09-11) — The tourist association will guide visitors to the Zozan Underground Bunker (Matsushiro Imperial Headquarters Underground Bunker) as a separate tourist spot.
Points of agreement/contradictions
The individual listings of rumors, the tourist association's individual spot guides, and the OSM node correspond to the Zozan Underground Bunker in Matsushiro, Nagano City. Historical and tourist information about the underground bunker is not used to support unverified narratives. Each source is not treated as supporting evidence for a different claim beyond its intended purpose.
| The rumored atomic claim | Matching results | reason | Corresponding documents |
|---|---|---|---|
| A supernatural phenomenon actually occurred. | Unconfirmed | The tourist association's information is a document describing the spot, not a document verifying the testimonies published secondhand. Independent chronological and observational data necessary for understanding the events cannot be confirmed. | No official data available for direct comparison. |
| The phenomenon was observed repeatedly. | Unconfirmed | The tourist association's information is a document describing the spot, not a document verifying the testimonies published secondhand. Independent chronological and observational data necessary for understanding the events cannot be confirmed. | No official data available for direct comparison. |
Alternative interpretation
In the case of underground passages, we can consider that factors such as illumination, reverberation, and the impression of being in a closed space may be relevant. However, since we have not confirmed recordings or observations under the same conditions regarding the specific rumors about the Matsushiro Zozan underground bunker, we cannot proceed to determine the cause.
Scope and limitations of the investigation
I checked individual listings with titles, the tourist association's spot page, and the OSM location. I did not verify the original source of the rumor, the people who experienced it, the date and time, the conditions of internal observation, or independent event documents.
Verification result: Indeterminate
The tourist association's information is a document describing the spot, not a document verifying the testimonies published secondhand. Independent chronological and observational data necessary for understanding the events cannot be confirmed.
Document Quality Score
| Source transparency | 27/30 | I recorded the URLs, confirmation dates, and scope of explanations separately for external individual postings and official announcements. |
|---|---|---|
| Historical and spatial context | 16/25 | While there is a description of the location in official documents, the first occurrence of the supernatural phenomenon and the primary testimonies have not been confirmed. |
| Safety information | 15/20 | At the Matsushiro Zozan Underground Bunker, please check the official guide for the publicly accessible areas and visiting rules, and do not enter areas outside of the lighting or in enclosed sections. Pay attention to your footing in the passageways and other visitors, and refrain from making noise or testing rumors. |
| Newness of information | 12/15 | The acquisition record from September 11, 2026, has been saved. This does not represent confirmation of the latest situation through on-site visits. |
| Transparency of the source of rumors | 6/10 | I read individual rumors about the Matsushiro Zozan underground bunker alongside descriptions of the publicly accessible sections and facilities in tourist guides. I did not use a list of search results as the source, but rather selected the pages corresponding to the locations, and this does not mean that I have verified the primary testimonies of the rumors. |
| total | 76/100 | 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
At the Matsushiro Zozan Underground Bunker, please check the official guide for the publicly accessible areas and visiting rules, and do not enter areas outside of the lighting or in enclosed sections. Pay attention to your footing in the passageways and other visitors, and refrain from making noise or testing rumors.
Check the area around the Matsushiro Zozan underground bunker on Google Maps.
What I learned by crossing locations
The historical sites included in the Koshinetsu region's historical remains and sites—Sado Gold Mine, Matsushiro Elephant Mountain Underground Bunker, and Shinfu Castle Ruins—differ in their purpose and scope of information creation. Even if official information indicates the existence of a place, it does not guarantee the veracity of experiences that led to secondary publications. The common conclusion for all three locations is that phenomena not explained by the administrators were not supplemented by inferences based on the location or landscape, and that a distinction was made between publishing rumors and verifying events.
summary
We have verified the individual rumors, official location guides, and maps for the historical sites of Sado Gold Mine, Matsushiro Elephant Mountain Underground Bunker, and Shinpu Castle Ruins. Since the acquired materials alone are insufficient to independently support or refute individual claims of supernatural occurrences, we leave the veracity of these claims undetermined. Please do not interpret the maps or illustrations as permission to visit; actual use should be based on the latest information from the administrators and on-site signage.
FAQ
If a rumor is included in official documents, does that mean it's true?
No. Inclusion in official documents indicates that the legend is introduced and recorded, but it does not prove that paranormal phenomena actually occur. In this text, we distinguish between inclusion and evidence.
Can I get to the location if I have a map?
The map provides supplementary location information and does not imply permission to enter or visit the site. Please check the latest information from the administrator regarding opening hours, fences, signs, conservation conditions, and traffic conditions.
Does "undetermined" mean that the rumor is disproven?
"Unable to determine" means that the claims cannot be compared based solely on the materials reviewed this time. We will not confuse the fact that the rumor was published with the truthfulness of the phenomenon, and will re-examine the matter if additional materials become available.
How to read this article and safety precautions
" Comparing paranormal rumors surrounding historical sites and ruins in the Koshinetsu region with historical documents | Historical sites: Sado Gold Mine, Matsushiro Zozan Underground Bunker, Shinfu Castle Ruins This is an article compiled by the Horror Tales File editorial team as a story, based on publicly available information, rumors circulating in the community, and information submitted by readers. It does not definitively state the authenticity of paranormal phenomena.
- We do not recommend visiting restricted areas, private property, abandoned buildings, or dangerous locations at night.
- If you go to the site, always prioritize compliance with laws and regulations, instructions from facility managers, and consideration for nearby residents.
- You can submit personal experiences, correction requests, and deletion requests through the "Personal Experiences/Information Submission" or "Contact Us" sections.
View editorial policy / Please share your experiences and information here. / inquiry
