https://www.dw.com/en/in-uganda-a-low-cost-alternative-to-dirt-floors-gains-ground/video-73314764
In Uganda, low-cost, clay-based earthen floors are a cleaner alternative to dirt floors and cheaper and more eco-friendly than concrete.
https://www.independent.co.uk/news/uganda-jinja-africa-rwanda-kenya-b2761717.html