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Also fascinating because we have video footage of it, and it’s as crazy as it sounds.

Quick 8-minute documentary on it that I found interesting: https://youtu.be/p_iZr2-Coqc?si=kthsdehqzJlvDfkg

There is a similar disaster unfolding in Brazil now[1]. The company Braskem has an ongoing rock salt mining operation under Maceió city for about 40 years. Some years ago sections of the mine started collapsing. Some neighborhoods started sinking and had to be completely vacated. A few days ago another part of the mine collapsed, draining waters from Mundaú lagoon. It was not completely drained, but it was caught on video[2]:

[1] https://g1.globo.com/al/alagoas/noticia/2023/07/22/tremor-ra...

[2] https://g1.globo.com/al/alagoas/noticia/2023/12/10/rompiment...

The linked articles are in Portuguese, but automatic translation should work fine on them.

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