1 Hour TRAIN RIDE AMBIENCE Black Screen Audio Only HD

1 Hour train ride ambience sound effect on loop — 1 hour black screen — high-speed rail.

THIS VIDEO IS A STILL IMAGE — black screen with a small line-art icon in the middle. There is NO ANIMATED VIDEO. Pure audio for hearing-test checks, alarm-replacement loops, study background, sleep timers, or just letting the sound run while you do something else.

#blackscreen #audioonly #1hour

Audio: "KTX high speed train to Busan" (radio aporee / Internet Archive item aporee_65051_75140, public domain).