The incredible 4,000-year-old termite city as big as Britain

Scientists estimate the termites excavated the equivalent of 4,000 Great Pyramids of Giza. The oldest mound is about 3,800 years old.
Read more: https://www.scmp.com/news/world/americas/article/2174062/brazil-termites-have-built-sprawling-megacity-size-britain?source=Snapzu