A prehistoric time in human history known as the Stone Age is characterized by the predominance of the use of stone implements. It is a broad phase that covers a great amount of time, roughly ranging from 2 . 5 million years ago to 4 , 000 BCE (changing regionally). The Palaeolithic, also known as the Old Stone Age, Mesolithic, and Neolithic, respectively, are the three main phases of the Stone Age. The shift from early hominids to the advent of modern humans was marked by the Stone Age, which is an important stage in human evolution. The emergence of early artistic expression through cave paintings and rock art, as well as the formation of social structures and cultural practices, are characteristics of this period. It is also characterized by the mastery of stone tools. Technology, agriculture, and civilization have all advanced since the Stone Age as a result.