Case No. #1498
The Name-Calling Voice of Kurobe Gorge
Summary
Between 2018 and 2022, maintenance workers and visitors in Kurobe Gorge, Toyama, reported hearing what sounded like their own names being called from an undetermined direction. Six reports across different dates were filed by people of different occupations and purposes. In one case, a tourist nearly stepped off the edge of the gorge while following the sound's direction. Acoustic measurements confirmed a "corridor effect" from the gorge's geometry but noted it cannot account for the specific phenomenon of hearing one's own name.
Details
Kurobe Gorge is one of Japan's deepest and most dramatic gorges. The construction of the Kurobe No. 4 Dam and hydroelectric plant (1956–1963) claimed 171 lives in what became legendary as Japan's most dangerous postwar engineering project. The inner gorge remains heavily restricted to general visitors.
The first record, from September 2018, involves a maintenance engineer in his forties working alone on an inspection task. He heard his own name called clearly. He turned; no one was present. Colleagues were confirmed to be at separate locations with radio contact maintained. He initially attributed it to echo, but emphasized: "My name. Clear. Not a general shout — it was addressing me specifically."
Five additional reports were filed between 2019 and 2021 from workers, tourists, and a press photographer — different occupations, different days. One report (2020) described a female tourist in her thirties who began walking toward the gorge edge, following the direction of the voice. A companion seized her arm before she reached the drop.
An acoustics specialist measured specific locations within the gorge and confirmed a pronounced corridor effect — the gorge geometry causes sounds originating at one location to appear, to a listener at certain points, as if coming from a different direction. The effect was particularly strong in the frequency range of the human voice.
However, the specialist acknowledged that the corridor effect explains directional displacement of sound, not the content of what is heard. Perceiving one's own name — which is specific to each individual — cannot be attributed to random acoustic reflection. The gorge contains memorials to those killed in the dam's construction; the Bureau's record makes no direct claim of a causal link to those deaths.
Timeline
- September 2018Maintenance engineer hears own name called clearly while working alone; no colleagues within calling range.
- 2019–2021Five similar reports from two workers, two tourists, and a press photographer.
- 2020 (tourist incident)Female tourist walks toward gorge edge following the sound's direction; stopped by companion.
- 2021Acoustic specialist confirms corridor effect in human voice frequencies; insufficient to explain name perception.
- 2022Corridor-effect location mapping completed. Full explanation of name-hearing phenomenon remains outstanding.
- PresentHazard signage at gorge edge reinforced. Additional acoustic measurement planned.
Witness Testimony
Maintenance engineer (male, 40s)"My name was called. Clearly. I turned — no one. All colleagues confirmed at other locations. I want to say it was an echo. But an echo doesn't produce a specific name."
Tourist (female, 30s)"A man's voice called my name. I walked toward it. I was right at the gorge edge when my friend grabbed my arm. The name was the one only my family uses."
Acoustics specialist (male, 50s)"The corridor effect displacing sound direction — confirmed. But whether one hears a name is a different question. Random reflection could theoretically resemble a name. That it happened repeatedly to separate individuals is worth noting."
Kyu's Analysis
In a gorge where 171 people died, voices call by name. The corridor effect changes direction but does not generate names. Kurobe's voice belongs to someone.
