On 21 October 1966, a waste heap from the Merthyr Vale mine collapsed over Aberfan, Wales. The material slides towards the village and reaches houses as well as the Pantglas school. The death toll is 144, including 116 children. The disaster begins in a cluster that seemed motionless.
The National Library of Wales describes the destabilization of the earth from an underground source. Water and waste do not remain two separate elements: the mixture becomes mobile and goes down quickly. The community immediately participates in the rescue; an investigation is opened to understand the circumstances and responsibilities.
The archives preserve maps, testimonies and documents of the reconstruction. The unusual element, here tragic, is the transformation of a solid mass into a flow capable of reaching the buildings below. It takes no supernatural or invented scene to understand why this industrial landscape could hide a mortal danger.
What we know
A sober narrative, without images of victims or reconstituted dialogue. The figures are those of the national archive.
To go to the source
References accessed October 11, 2026. Linked pages may be in another language.
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