Homo habilis shelters date back two million years ago and remains indicate these shelters varied in size and shape to serve different purposes. Some Homo habilis structures were arranged in large, semicircular patterns, and contained a variety of tools made from stones and rocks. These shelters may have served as windbreakers, and housed individual families or small groups.
Homo habilis were not considered cave-dwellers because it is believe fire was not yet discovered, and primarily constructed their homes from earthen materials, such as stones and branches. They compiled large amounts of stones, which may have served as methods of defense, and were also used to protect inhabitants from the elements, carve weapons and contain fires.