This article organizes paranormal rumors circulating around bodies of water (waterfalls, lakes, dams, and the sea) in the Koshinetsu region, categorized not by the intensity of the experience, but by "what can be confirmed," "what cannot be confirmed," and "conditions for safe investigation." This article does not prove the existence of paranormal phenomena, nor does it recommend visiting the locations.
The existence of paranormal phenomena cannot be confirmed. The map is for assistance in finding the location only and does not indicate permission to enter or safety. Please be sure to check the opening hours, restrictions, and administrator's information on the day of your visit.
How did you organize the rumors about waterfront areas (waterfalls, lakes, dams, and the sea) in the Koshinetsu region?
Descriptions of specific supernatural occurrences, accidents, deaths, and sighting frequencies from the previous text, whose sources could not be independently verified, have not been adopted as fact. The order of listing is not based on the strength or danger level of the paranormal activity, but rather on maintaining the location order of the existing articles. The structure has been revised to allow readers to easily separate and verify names, maps, and safety conditions.
| Listing order | Place name | Location properties | Rumors covered in existing articles (unconfirmed) | Conditions to check |
|---|---|---|---|---|
| 1 | Fukashiro Dam (Yamanashi Prefecture) | Dams and reservoirs | Unconfirmed hearsay about hands, beckoning gestures, footsteps, and other noises. | Fukashiro Dam (Yamanashi Prefecture): Check the administrator's accessibility, flood control measures, and fall prevention equipment. |
| 2 | Oiranbuchi (Yamanashi Prefecture) | Mountains/natural terrain | Unconfirmed rumors about a woman's figure and voice. | Oiranbuchi (Yamanashi Prefecture): Check weather, sunset, hiking trails, and traffic restrictions. |
| 3 | Fukuyama Tunnel (Niigata Prefecture) | Tunnels and old roads | Unconfirmed rumors about vehicle malfunctions | Fukuyama Tunnel (Niigata Prefecture): Check with the road administrator regarding passability, closed sections, and lighting. |
| 4 | Overpass near Aomigawa Station (Niigata Prefecture) | Bridges | Unconfirmed rumors about human figures and voices | Overpass near Aomigawa Station (Niigata Prefecture): Check traffic restrictions, pedestrian walkways, and fall prevention equipment. |
| 5 | Ushibusegawa French-style staircase structure (Nagano Prefecture) | Civil engineering and river facilities | Unconfirmed hearsay about the sighting and voice of a child | Ushibusegawa French-style stepped structure (Nagano Prefecture): Check management area, flooding, construction, and pedestrian accessible sections. |
| 6 | Lake Aoki (Nagano Prefecture) | Lakes, ponds, and marshes | Unconfirmed rumors about footsteps, noises, and unnatural silence. | Lake Aoki (Nagano Prefecture): Check water level, walking paths, nighttime closures, and fall prevention equipment. |
Listing order 1: Fukashiro Dam (Yamanashi Prefecture)

Rumors that remained in existing articles
The existing text dealt with unconfirmed hearsay related to hands, beckoning gestures, footsteps, and other noises. Since this cannot be independently verified in primary sources, it will be treated as hearsay linked to Fukashiro Dam (Yamanashi Prefecture), rather than as factual events or personal experiences of the supernatural.
How to read a map
Fukashiro Dam (Yamanashi Prefecture) is categorized as a dam/reservoir in this article. The embedded map is for location assistance only and does not guarantee information on property boundaries, access hours, private property, construction, closures, or parking availability.
Check Fukashiro Dam (Yamanashi Prefecture) on Google Maps
Checklist for safe inspection
Please check the latest information from the administrator regarding the separation of managed areas from publicly accessible areas, including flood levels, water releases, fall prevention fences, and parking/walking zones. Do not attempt nighttime exploration or a test of courage; prioritize on-site signs and administrator instructions over articles and maps.
Listing order 2: Oiranbuchi (Yamanashi Prefecture)

Rumors that remained in existing articles
The existing text dealt with unconfirmed hearsay concerning a woman's figure and voice. Since this cannot be independently verified in primary sources, it will be treated as hearsay linked to Oiranbuchi (Yamanashi Prefecture), rather than as factual or personal experience of a supernatural occurrence.
How to read a map
Oiranbuchi (Yamanashi Prefecture) is categorized as a mountainous/natural landform in this article. The embedded map is for location assistance only and does not guarantee property boundaries, access hours, private property status, construction, closures, or parking availability.
Check Oiranbuchi (Yamanashi Prefecture) on Google Maps
Checklist for safe inspection
Please check the latest information regarding weather, sunset, trail and forest road restrictions, rockfalls, wildlife, and cell phone reception. Do not attempt nighttime exploration or a test of courage; prioritize local signs and instructions from administrators over articles and maps.
Listing order 3: Fukuyama Tunnel (Niigata Prefecture)

Rumors that remained in existing articles
The existing text dealt with unconfirmed hearsay regarding the vehicle's anomalies. Since this cannot be independently verified through primary sources, it will be treated as hearsay linked to the Fukuyama Tunnel (Niigata Prefecture), rather than as factual events or personal experiences of the strange occurrences.
How to read a map
In this article, the Fukuyama Tunnel (Niigata Prefecture) is categorized as a tunnel/old road. The embedded map is for location assistance only and does not guarantee information on property boundaries, passable hours, private property, construction, closures, or parking availability.
Check Fukuyama Tunnel (Niigata Prefecture) on Google Maps
Checklist for safe inspection
Please check the latest information from road authorities regarding road closures, blockades of mine entrances and old roads, lighting hours, and rockfall/road surface conditions. Do not attempt nighttime exploration or a test of courage; prioritize on-site signs and instructions from road authorities over articles and maps.
4th in listing order: Overpass near Aomigawa Station (Niigata Prefecture)

Rumors that remained in existing articles
The existing text dealt with unconfirmed hearsay related to shadowy figures and voices. Since this cannot be independently verified in primary sources, it will be treated as hearsay linked to the overpass near Aomigawa Station (Niigata Prefecture), rather than as factual events or personal experiences of the supernatural.
How to read a map
The overpass near Aomigawa Station (Niigata Prefecture) is categorized as a bridge/bridge in this article. The embedded map is for location assistance only and does not guarantee property boundaries, access hours, private property status, construction, closures, or parking availability.
Check the pedestrian overpass near Aomigawa Station (Niigata Prefecture) on Google Maps.
Checklist for safe inspection
Please check the latest information from road authorities regarding traffic restrictions, sidewalks, construction, strong winds/freezing conditions, and fall prevention equipment. Do not attempt nighttime exploration or a test of courage; prioritize on-site signs and instructions from road authorities over articles and maps.
Listing order 5: Ushibushigawa French-style staircase structure (Nagano Prefecture)

Rumors that remained in existing articles
The existing text dealt with unconfirmed hearsay concerning the figure and voice of a child. Since this cannot be independently verified in primary sources, it will be treated as hearsay linked to the Ushibusegawa French-style stepped weir (Nagano Prefecture), rather than as factual evidence or personal experience of a supernatural occurrence.
How to read a map
The Ushibusegawa French-style stepped structure (Nagano Prefecture) is categorized as a civil engineering/river facility in this article. The embedded map is for location assistance only and does not guarantee site boundaries, access hours, private property, construction, closures, or parking availability.
Check the Ushibusegawa French-style stepped weir (Nagano Prefecture) on Google Maps.
Checklist for safe inspection
Please check the latest information from river and facility managers regarding managed areas, flooding, construction, pedestrian-accessible sections, and fall prevention equipment. Do not attempt nighttime exploration or a test of courage; prioritize on-site signs and manager instructions over articles and maps.
Listing order 6: Lake Aoki (Nagano Prefecture)

Rumors that remained in existing articles
The existing text dealt with unconfirmed hearsay related to footsteps, noises, and unnatural silence. Since this cannot be independently verified in primary sources, it will be treated as hearsay linked to Lake Aoki (Nagano Prefecture), rather than as factual or personal experiences of the supernatural.
How to read a map
Lake Aoki (Nagano Prefecture) is categorized as a lake, pond, or marsh in this article. The embedded map is for location assistance only and does not guarantee information on property boundaries, access hours, private property, construction, closures, or parking availability.
Check Lake Aoki (Nagano Prefecture) on Google Maps
Checklist for safe inspection
Please check the latest information from the administrator regarding water levels, trail opening status, nighttime closures, footing, and fall prevention equipment. Do not attempt nighttime exploration or a test of courage; prioritize on-site signs and administrator instructions over articles and maps.
Things you can learn from comparing them
Darkness, echoes, water sounds, wind, old structures, and poor visibility can all intensify feelings of unease or unease. However, these alone do not prove the existence of paranormal phenomena. It is important not to treat the impression of a place as the same as the verifiable conditions under which it can be used.
FAQ
If it's shown on the map, can I enter freely?
No. Inclusion on a map and permission to enter are separate things. It may be private property, a controlled area, a closed section, or off-limits at night.
If there are many rumors, does that constitute evidence of a paranormal phenomenon?
No, that's not acceptable. The amount of information and fact-checking are two different things. Any information that cannot be confirmed through primary sources or administrator information will be treated as unconfirmed.
Are there ways to enjoy it without actually going there?
You can compare publicly available documents and maps to investigate local history and the background of structures. There is no need to travel to dangerous times or locations.
Update policy and information provision
Map display and publication conditions may change. If you notice any errors, closures, name changes, etc., please let us know.inquiryPlease let us know. We will only update information that we have been able to confirm, and we will not turn rumors into facts.
Enjoy horror safely at home
How to read this article and safety precautions
" [2026 Latest] 6 Locations in the Koshinetsu Region with Ghostly Rumors Related to Waterfronts (Waterfalls, Lakes, Dams, and the Sea) | Organized with Maps and Safety Information 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.
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