This 19 November 2018 video says about itself:

A vast array of 200 million termite mounds have existed in NE Brazil for up to 4,000 years. These mounds cover 230,000 km2, an area similar to that of the UK, and are the result of the excavation of 10 km3 of soil during the construction of a massive underground network of tunnels. A combination of time and interconnectivity of the tunnels has allowed a regular (over-dispersed) pattern of mounds to emerge through self-organizational processes driven by episodic leaf fall.

From ScienceDaily:

4,000-year-old termite mounds found in Brazil are visible from space

November 20, 2018

Researchers reporting in Current Biology on November 19 have found that a vast array of regularly spaced, still-inhabited termite mounds in northeastern Brazil — covering an area the size of Great Britain — are up to about 4,000 years old.

The mounds, which are easily visible…