This reminds me of Singapore, where the national stockpile of sand is a literal state secret: https://www.harvarddesignmagazine.org/articles/built-on-sand-singa

This reminds me of Singapore, where the national stockpile of sand is a literal state secret: https://www.harvarddesignmagazine.org/articles/built-on-sand-singapore-and-the-new-state-of-risk/ https://www.harvarddesignmagazine.org/articles/built-on-sand...