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These tunnels are designed for 100,000 years

60 videos recommended on HN
YouTube
2 HN users recommended this documentary2 months2021–2024 score 2
Years with an HN recommendation, 2007–2026

Recommended in nuclear waste threads as a short, clear look at a real long-term storage solution.

Tom Scott visits Onkalo in Finland, the planned deep geologic repository for high-level nuclear waste intended to be sealed for 100,000 years.

“Tom Scott has a great video[0] about the Onkalo spent nuclear fuel repository in Finland[1]” (HN, 2022)

2 recommendations · 3 citations · Documentaries

5 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@caddywompus Jun 2021 Recommends
on HN thread Portable nuclear reactor program sparks controversy
Yes, I was really disheartened when I learned that my city only recycles a few types of plastic, and most of it just goes to the landfill. And now its being theorized that oil industries encouraged recycling as a solution, even knowing its deficiencies, so that plastics would be more readily accepted. Regarding nuclear waste disposal, this is the coolest solution I've seen so far: - [this video]
Presents a cool long-term nuclear waste disposal solution.
@Nannooskeeska Aug 2022 Recommends
on HN thread The messages that survived civilisation's collapse
Tom Scott has a great video[0] about the Onkalo spent nuclear fuel repository in Finland[1], in which he talks about one of the reasons that they decided on the particular area - why would anyone dig there? Skip to 4:29 in the video for the relevant info. [0]: [this video] [1]: [link]
Explains Onkalo repository and why the site was chosen

Citations, criticism and jokes

@zeotroph Jan 2022 Cites it
on HN thread Sweden approves plan to bury spent nuclear fuel for 100k years
In Finland they are already filling up a 100k year long term storage mine [1]. Will every country with nuclear power have to find and dig (and counter-NIMBY) their own mines or could those with more favorable geological features offer theirs to others? Earthquake-prone Japan might have a hard time finding an appropriate location. 1: 6m Tom Scott video [this video]
Short Tom Scott video on Finland's long-term storage.
@Caligatio Aug 2023 Cites it
on HN thread The place where no humans will tread for 100k years
I've been binge watching Tom Scott videos after finding out he's quasi-retiring soon and just happened to have watched his video of the exact same project last night: [this video]
Tom Scott's video on the same long-term repository project
@esskay Nov 2024 Cites it
on HN thread The race to commercialise nuclear-powered batteries
Solutions are already being made for spent nuclear fuel, no reason why that wouldn't apply in this scenario. In fact its massive overkill for this particular situation but still an option if its needed: [this video]
Shows existing solutions for storing spent nuclear fuel

Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.

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