Ans: Loess is generally found in large swaths of Asia, Europe, and the United States. It is most common in temperate and peripheral semi-arid regions of deserts and makes up roughly ten percent of Earth's land surface. Loess is typically covered with a layer of fertile soil that is ideal for intensive farming. There are countless examples of loess's ability to hold vertical or even overhanging cliffs in the Loess Plateau in China, where some loess bluffs rise to 150 metres in height. People in semi-arid locations, such as the Pueblo Indians, used loess-based adobe to build dwellings and fortress-like structures.