This article examines the Yahiko Mountain Skyline, Daibosatsu Pass, and Bungui Pass, differentiating between rumors published externally and location information released by local governments and administrators. The listing as a haunted spot, the existence of a location, and the occurrence of individual paranormal phenomena are not the same question. 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 | Bungui Pass | The designated individual listings treat Bungui Pass as a haunted spot in Nagano Prefecture. The fact that the listings were confirmed and the actual events described in the listings are separated; here, only the former is considered based on documentary evidence… | Undeterminable | 76/100 |
| 2 | Great Bodhisattva Pass | The designated individual listing introduces Daibosatsu Pass as a haunted spot in Yamanashi Prefecture. The existence of the individual page merely indicates that rumors are being presented, and does not confirm that the events described in the listing actually occurred… | Undeterminable | 76/100 |
| 3 | Yahiko Mountain Skyline | The designated individual listing identifies the Yahiko Mountain Skyline as a haunted spot in Niigata Prefecture. What we're examining here are online rumors and the individual incidents described within them… | Undeterminable | 76/100 |
1st Place: Bungui Pass | Undecided (76 points)
The rumored details
The designated individual publications treat Bungui Pass as a haunted spot in Nagano Prefecture. The fact of the publications being confirmed and the actual existence of the events described in the texts are separated; here, only the former is considered a documentary-based confirmation. This paper examines the existence of documents that can be said to indicate "supernatural occurrences actually happened" and records that can be said to indicate "the phenomena were repeatedly observed." This is not a quotation of the secondary publications' wording, but rather a separation of the conditions necessary for factual determination.
Source of the rumor and date of verification
We have separated the individual listings dealing with Bungui Pass from the guide provided by Ina City for reference. We have not treated the impressions and narratives circulating in the region as equivalent to empirical results obtained under similar observational conditions, and we have clearly stated that we have not accessed the original sources prior to the publications.
- Bungui Pass – A haunted spot in Nagano Prefecture(Confirmed on 2026-09-11) — The title of the individual page is "Bungui Pass | Bungui-toge - 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 individual page for Ina City describes Bungui Pass as the boundary between Ina City's Hase district and Ooshika Village, and mentions the former boundary marker of the Takato Domain, the Akiba Road, and the current Bungui-no-Sato Line. The role of the official document is to provide geographical and usage information for the pass, not to certify any paranormal activity. The official guide is information for describing the location and its use, not an observation report verifying individual anomalies.
- Bungui Pass: Ina City Official Website(Verification Date: 2026-09-11) — This guide shows the boundary between Hase in Ina City and Ooshika Village, the former boundary marker of the Takato Domain, and the Akiba Road and the current route.
Points of agreement/contradictions
The rumor is posted, the pass guide for Ina City is included, and the OSM node corresponds to Bungui Pass in Nagano Prefecture. Geographical and historical information is not treated as evidence to substantiate the rumored events. It is not treated as supporting evidence for other claims beyond the purpose of each individual document.
| The rumored atomic claim | Matching results | reason | Corresponding documents |
|---|---|---|---|
| A supernatural phenomenon actually occurred. | Unconfirmed | The materials from Ina City deal with boundaries, roads, and transportation information, and do not verify the personal accounts that have been republished. The necessary observation conditions and independent records are not available. | No official data available for direct comparison. |
| The phenomenon was observed repeatedly. | Unconfirmed | The materials from Ina City deal with boundaries, roads, and transportation information, and do not verify the personal accounts that have been republished. The necessary observation conditions and independent records are not available. | No official data available for direct comparison. |
Alternative interpretation
The impressions people have of a mountain pass may be influenced by things they learned before visiting, the weather, the level of tranquility, and the conditions of their journey. However, the official usage guide for Bungui Pass is not a tool for measuring these factors, and it does not generalize individual perceptions into conclusions.
Scope and limitations of the investigation
I checked the titles of the individual entries, the Bungui Pass page for Ina City, and the location of OSM. I did not check the original story of the rumor, the accounts of those who experienced it, the conditions at night, or any reproduction or third-party observation of the phenomenon.
Verification result: Indeterminate
The materials from Ina City deal with boundaries, roads, and transportation information, and do not verify the personal accounts that have been republished. The necessary observation conditions and independent records are not available.
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 | Bungui Pass is a place to visit, and visitors should follow the guidelines regarding parking, traffic, and access areas. Please check the latest information from Ina City and refrain from parking on the roadside or trespassing on private property in the surrounding area. Do not use rumors or personal experiences as the basis for deciding whether or not to visit. |
| 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 have separated the individual listings dealing with Bungui Pass from the guide provided by Ina City for reference. We have not treated the impressions and narratives circulating in the region as equivalent to empirical results obtained under similar observational conditions, and we have clearly stated that we have not accessed the original sources prior to the publications. |
| 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
Bungui Pass is a place to visit, and visitors should follow the guidelines regarding parking, traffic, and access areas. Please check the latest information from Ina City and refrain from parking on the roadside or trespassing on private property in the surrounding area. Do not use rumors or personal experiences as the basis for deciding whether or not to visit.
2nd place: Daibosatsu Pass | Undetermined (76 points)
The rumored details
The designated individual listings introduce Daibosatsu Pass as a haunted spot in Yamanashi Prefecture. The existence of the individual pages merely indicates that rumors are being presented and does not serve as evidence that the events described in the listings actually occurred. This paper examines the existence of documents that can be said to indicate that "supernatural phenomena actually occurred" and records that can be said to indicate that "the phenomena were repeatedly observed." This is not a quote from the secondary publishers, but rather a separation of the conditions necessary for factual determination.
Source of the rumor and date of verification
The external publications of Daibosatsu Pass are secondary sources that show narratives associated with the pass. Because the purpose of the information differs from official mountain tourism guides, the descriptions of hiking trails and scenery are not extended to factual verification of personal experiences.
- Daibosatsu Pass – A haunted spot in Yamanashi Prefecture(Confirmed on 2026-09-11) — The title of the individual page is "Daibosatsu Pass | Daibosatsu Toge - A haunted spot in Yamanashi Prefecture". Confirmed as a secondary publication of rumors that mentions the name of a place.
Things that could be confirmed from official and primary source materials
The Koshu City official tourism website provides individual information on the Daibosatsu trekking course. The official documents only confirm the designation of locations as mountain climbing/walking routes, and are not intended to evaluate the claims made in the rumors. The official guide provides information for describing locations and their use, and is not an observational report verifying individual anomalies.
- Daibosatsu Trekking Course [Mountain Climbing] – Yamanashi Koshu City Official Tourism Website(Confirmed on 2026-09-11) — The official tourism website of Koshu City provides direct directions for the mountain climbing course on Mount Daibosatsu.
Points of agreement/contradictions
The rumor is posted, the trekking guide for Koshu City is included, and the OSM node corresponds to the location of Daibosatsu Pass in Koshu City. Do not confuse the course guide and the rumor as the same evidence. Do not treat them as supporting evidence for other claims beyond the purpose of each document.
| The rumored atomic claim | Matching results | reason | Corresponding documents |
|---|---|---|---|
| A supernatural phenomenon actually occurred. | Unconfirmed | The official website is intended to provide information on trekking courses and is not intended to verify the experiences described in secondary publications. Due to the lack of observation conditions and independent records, definitive conclusions should be avoided. | No official data available for direct comparison. |
| The phenomenon was observed repeatedly. | Unconfirmed | The official website is intended to provide information on trekking courses and is not intended to verify the experiences described in secondary publications. Due to the lack of observation conditions and independent records, definitive conclusions should be avoided. | No official data available for direct comparison. |
Alternative interpretation
While factors such as weather conditions in the mountains, fatigue, sense of distance, and how sounds travel can alter perceptions, they have not been confirmed as the cause of the events described at Daibosatsu Pass. We will be careful not to confuse mountain climbing guidance with the observational data necessary for verifying phenomena.
Scope and limitations of the investigation
The items checked are the titles of the individual entries, the individual course guides for Koshu City, and the OSM location anchors. The first appearance of the personal accounts, the specific conditions during the climb, and the primary records of rescues, accidents, and phenomena were not checked.
Verification result: Indeterminate
The official website is intended to provide information on trekking courses and is not intended to verify the experiences described in secondary publications. Due to the lack of observation conditions and independent records, definitive conclusions should be avoided.
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 | If you are heading to Daibosatsu Pass, please plan your trip carefully, taking into account trail conditions, weather, equipment, and expected return time, and check the latest information provided by the trail manager. Avoid entering the mountains after sunset or straying from the route, especially if motivated by rumors of paranormal activity. |
| 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 | The external publications of Daibosatsu Pass are secondary sources that show narratives associated with the pass. Because the purpose of the information differs from official mountain tourism guides, the descriptions of hiking trails and scenery are not extended to factual verification of personal experiences. |
| 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
If you are heading to Daibosatsu Pass, please plan your trip carefully, taking into account trail conditions, weather, equipment, and expected return time, and check the latest information provided by the trail manager. Avoid entering the mountains after sunset or straying from the route, especially if motivated by rumors of paranormal activity.
3rd Place: Yahiko Mountain Skyline | Undecided (76 points)
The rumored details
The specified individual listing identifies the Yahiko Mountain Skyline as a haunted spot in Niigata Prefecture. This review examines online rumors and does not treat the individual events described as verified facts. This article focuses on the existence of documents indicating that "supernatural occurrences actually occurred" and records indicating that "the phenomena were repeatedly observed." This is not a direct quote from the secondary posters, but rather a separation of the conditions necessary for factual determination.
Source of the rumor and date of verification
The rumors about the Yahiko Mountain Skyline were verified by checking individual external web pages that included the road name. Local government road and tourism information was limited to the context of location and usage, and was not used to supplement information on the transmission routes of rumors or firsthand experiences.
- Yahiko Mountain Skyline | Yahiko-yama Skyline - A haunted spot in Niigata Prefecture(Confirmed on 2026-09-11) — The title of the individual page is "Yahikoyama Skyline | Yahikoyama Skyline - A haunted spot in Niigata Prefecture". Confirmed as a secondary publication of rumors that mentions a specific location.
Things that could be confirmed from official and primary source materials
The individual page for Yahiko Village describes the Yahiko Mountain Skyline as a scenic spot and historical site, and explains it as an approximately 13.7-kilometer drive towards the summit. This is a guide to the road and scenery, not a record of any rumored events. The official guide provides information for describing locations and for use, and is not an observation report verifying any individual anomalies.
- Yahiko Mountain Skyline | Landmarks and Historical Sites | Yahiko Village(Confirmed on 2026-09-11) — This is a driving route of approximately 13.7 kilometers leading towards the summit.
Points of agreement/contradictions
The individual listings of rumors, the village skyline guide, and the OSM roadways all refer to the same road context within Yahiko Village. The descriptions of the driving routes are not extended to prove the events mentioned in the rumors. 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 village's webpage is a guide to driving routes, not an observational record verifying reposted personal accounts. It lacks the independent evidence necessary to judge the events. | No official data available for direct comparison. |
| The phenomenon was observed repeatedly. | Unconfirmed | The village's webpage is a guide to driving routes, not an observational record verifying reposted personal accounts. It lacks the independent evidence necessary to judge the events. | No official data available for direct comparison. |
Alternative interpretation
On winding mountain roads, factors such as the range of lighting, fog, and reflective surfaces can affect visibility. Since the Skyline documentation does not include records comparing the conditions under which the experience took place, we have not determined the truth of the rumor based solely on the road environment.
Scope and limitations of the investigation
The scope of verification is limited to individual listings with titles, individual guides for Yahiko Village, and OSM anchors. The original publication date, driver and passenger records, date and time, road conditions, and independent records of accidents or events were not verified.
Verification result: Indeterminate
The village's webpage is a guide to driving routes, not an observational record verifying reposted personal accounts. It lacks the independent evidence necessary to judge the events.
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 using the Yahiko Mountain Skyline, please check the official information for road opening periods, hours, and weather-related restrictions. Do not stop on the road for exploration or photography, and prioritize driving and safe escape when visibility is poor. |
| 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 | The rumors about the Yahiko Mountain Skyline were verified by checking individual external web pages that included the road name. Local government road and tourism information was limited to the context of location and usage, and was not used to supplement information on the transmission routes of rumors or firsthand experiences. |
| 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 using the Yahiko Mountain Skyline, please check the official information for road opening periods, hours, and weather-related restrictions. Do not stop on the road for exploration or photography, and prioritize driving and safe escape when visibility is poor.
Check the area around Yahiko Mountain Skyline on Google Maps.
What I learned by crossing locations
The Yahiko Mountain Skyline, Daibosatsu Pass, and Bungui Pass, which are included in the mountain roads and passes of the Koshinetsu region, differ in the purpose and scope of the materials created. Even if official information indicates the existence of a place, it does not confirm the veracity of experiences that led to secondary publications. The conclusion common to all three locations is that phenomena not explained by the administrators were not supplemented by inferences based on the location or scenery, and that a distinction was made between the publication of rumors and the verification of events.
summary
We have examined individual rumors, official location guides, and maps for the Yahiko Mountain Skyline, Daibosatsu Pass, and Bungui Pass. Since the acquired materials alone are insufficient to independently support or refute individual claims of supernatural occurrences, we will 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 administrator 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 on mountain roads and passes in the Koshinetsu region with historical documents: Yahiko Mountain Skyline, Daibosatsu Pass, Bungui Pass 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.
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