The Paleolithic or Palaeolithic or Palæolithic (/ ˌ p eɪ l-, ˌ p æ l i oʊ ˈ l ɪ θ ɪ k /), also called the Old Stone Age, is a period in human prehistory distinguished by the original development of stone tools that covers c. 99% of the time period of human technological prehistory.
The Paleolithic diet, Paleo diet, caveman diet, or stone-age diet is a modern fad diet consisting of foods thought by its proponents to mirror those eaten during the Paleolithic era.  There are different variants of the diet; some are predominantly plant-based but the most recent popular variants focus on animal products. 
Conservation problems in the original cave have made the creation of replicas more important. Lascaux II. Lascaux II, an exact copy of the Great Hall of the Bulls and the Painted Gallery was displayed at the Grand Palais in Paris, before being displayed from 1983 in the cave's vicinity (about 200 m or 660 ft away from the original cave), a compromise and attempt to present an impression of the ...
The Oldowan is the archaeological term used to refer to the stone tool industry that was used by hominids during the earliest Palaeolithic period. For a long time it was thought that the Oldowan was the earliest stone tool industry in prehistory, from 2.6 million years ago up until 1.7 million years ago.