Question: What was found, in the Cango Valley along with Circular stone hearths and calcified dung remains of domesticated sheep, that is a cutting tool shaped somewhat like an axe that dates back to the stone age?

full_context: Document 1: Boomplaas Cave: Boomplaas Cave is located in the Cango Valley in the foothills of the Swartberg mountain range, north of Oudtshoorn, Eden District Municipality in the Western Cape Province, South Africa. It has a 5 m deep stratified archaeological sequence of human presence, occupation and hunter-gatherer/herder acculturation dating back 80,000 years. The site's documentation contributed to the reconstruction of palaeo-environments in the context of changes in climate within periods of the Late Pleistocene (12,000 - 80,000 years BP) and the Holocene (since 12,000 years BP). The cave has served multiple functions during its occupation, such as a kraal (enclosure) for animals, a place for the storage of oil rich fruits and as a hunting camp. Circular stone hearths and calcified dung remains of domesticated sheep as well as stone adzes and pottery art (painted stones) were excavated indicating that humans lived at the site and kept animals.
Document 2: Sirgenstein Cave: The small Sirgenstein Cave, German: "Sirgensteinhöhle" is situated 565 m above sea level inside the 20 m high "Sirgenstein", a limestone rock. The cave sits 35 m above the Ach River valley bottom in the central Swabian Jura, southern Germany. Archaeologist R. R. Schmidt excavated the site in 1906 during which he identified indices of prehistoric human presence. He recorded the complete stratigraphic sequence of Palaeolithic and Neolithic origin. In his 1910 analysis Schmidt inspired future archaeologists with his pioneering concept of including the excavation site within its geographic region, contextualizing it within a wide scientific spectrum and demonstrated valuable results as he correlated the Sirgenstein layer structure to those of prehistoric sites in France.
Document 3: Art of the Upper Paleolithic: The art of the Upper Paleolithic is amongst the oldest art known (sometimes called prehistoric art). Older possible examples include the incised ochre from Blombos Cave. Upper Paleolithic art is found in Aurignacian Europe and the Levant some 40,000 years ago, and on the island of Sulawesi in Indonesia at a similar date, suggesting a much older origin perhaps in Africa. Cave art in Europe continued to the Mesolithic (at the beginnings of the Holocene) about 12,000 years ago. As this corresponds to the final phase of the last glacial period, Upper Paleolithic art is also known as "Ice Age art".
Document 4: Lovelock Cave: Lovelock Cave (NV-Ch-18) is a North American archaeological site previously known as Sunset Guano Cave, Horseshoe Cave, and Loud Site 18. The cave is about 150 feet long and 35 feet wide. Lovelock Cave is one of the most important classic sites of the Great Basin region because the conditions of the cave are conducive to the preservation of organic and inorganic material. The cave was placed on the National Register of Historic Places on May 24, 1984. It was the first major cave in the Great Basin to be excavated, and the Lovelock Cave people are part of the University of California Archaeological Community's Lovelock Cave Station.
Document 5: Geisenklösterle: Geisenklösterle (German: 'Geißenklösterle' ) is an archaeological site of significance for the central European Upper Paleolithic, located near the town of Blaubeuren in the Swabian Jura in Baden-Württemberg, southern Germany. First explored in 1963, the cave contains traces of early prehistoric art from between 43,000 and 30,000 years ago. In 2017 the site became part of the UNESCO World Heritage Site Caves and Ice Age Art in the Swabian Jura.
Document 6: Tepoztopilli: The tepoztopilli ] was a common front-line weapon of the Aztec military. The tepoztopilli was a pole-arm, and to judge from depictions in various Aztec codices it was roughly the height of a man, with a broad wooden head about twice the length of the users' palm or shorter, edged with razor-sharp obsidian blades which were deeply set in grooves carved into the head, and cemented in place with bitumen or plant resin as an adhesive. This made the weapon vaguely similar to the "macuahuitl" or "macana", however it had a much smaller cutting edge and a longer handle. This gave the weapon a superior reach, but blows had to be more carefully executed.
Document 7: Kunai: A kunai (苦無 , "kunai" ) is a Japanese tool originally meant for farming in the Tensho Era of Japan (1573 - 1592). The two widely recognized variations of the kunai are short kunai (小苦無 , "shō-kunai" ) and the big kunai (大苦無 , "dai-kunai" ) . Although a basic tool, in the hands of a martial arts expert, the kunai could be used as a multi-functional weapon, popular before the widely spread of firearms. The kunai is commonly associated with the ninja, who used it to gouge holes in walls. By attaching a rope to the ring, the user could easily climb walls or trees, which required great accuracy when thrown. The kunai blade was unsharpened, soft iron, and was used for digging, prying, and smashing wood, plaster, and the like -- which would like have destroyed a tool which was sharpened or heat-treated. Many popular manga and "ninjutsu" characters use kunai as both their primary and secondary weapons.
Document 8: Bull Thistle Cave Archaeological Site: The Bull Thistle Cave Archaeological Site is an archaeological site on the National Register of Historic Places, located in Tazewell County, Virginia. It is a vertical shaft pit burial cave. The distribution of the skeletal remains indicates that bodies were either thrown or lowered into the cave. On the surface of the cave floor, researchers have discovered the remains of a minimum of 11 bodies. Based on an artifact recovered from the site, it is estimated that the cave was used for burials between 1300 and 1600 AD.
Document 9: Screwdriver: A screwdriver is a tool, manual or powered, for turning (driving or removing) screws. A typical simple screwdriver has a handle and a shaft, and a tip that the user inserts into the screw head to turn it. The shaft is usually made of tough steel to resist bending or twisting. The tip may be hardened to resist wear, treated with a dark tip coating for improved visual contrast between tip and screw—or ridged or treated for additional 'grip'. Handles are typically wood, metal, or plastic and usually hexagonal, square, or oval in cross-section to improve grip and prevent the tool from rolling when set down. Some manual screwdrivers have interchangeable tips that fit into a socket on the end of the shaft and are held in mechanically or magnetically. These often have a hollow handle that contains various types and sizes of tips, and a reversible ratchet action that allows multiple full turns without repositioning the tip or the user's hand.
Document 10: Try square: A try square is a woodworking or a metalworking tool used for marking and measuring a piece of wood. The "square" refers to the tool's primary use of measuring the accuracy of a right angle (90 degrees); to "try" a surface is to check its straightness or correspondence to an adjoining surface. A piece of wood that is rectangular, flat, and has all edges (faces, sides, and ends) 90 degrees is called four square. A board is often milled four square in preparation for using it in building furniture.
Document 11: Vogelherd Cave: The Vogelherd Cave (German: 'Vogelherdhöhle' , or simply "Vogelherd") is located in the eastern Swabian Jura, south-western Germany. This limestone karst cave came to scientific and public attention after the 1931 discovery of the Upper Palaeolithic "Vogelherd figurines", attributed to paleo-humans of the Aurignacian culture. These miniature sculptures made of mammoth ivory rank among the oldest uncontested works of art of mankind. In 2017 the site became part of the UNESCO World Heritage Site "Caves and Ice Age Art in the Swabian Jura".
Document 12: Hohle Fels: The Hohle Fels (] ) (also Hohlefels, Hohler Fels, German for "hollow rock") is a cave in the Swabian Jura of Germany that has yielded a number of important archaeological finds dating to the Upper Paleolithic. Artifacts found in the cave represent some of the earliest examples of prehistoric art and musical instruments ever discovered. The cave is just outside the town of Schelklingen in the state of Baden-Württemberg, near Ulm. In 2017 the site became part of the UNESCO World Heritage Site "Caves and Ice Age Art in the Swabian Jura".
Document 13: Bearded axe: A bearded axe, or Skeggöx (from Old Norse "Skegg", beard + "öx", axe) refers to various axes, used as a tool and weapon, as early as the 6th century AD. It is most commonly associated with Viking Age Scandinavians. The lower portion of an axe bit is called the "beard" and the cutting edge of the bearded axe extends below the width of the butt to provide a wide cutting surface while keeping the overall weight of the axe low. The hook, or "beard" of the axe would also have been useful in battle, for example to pull weapons out of the defender's grasp, or to pull down a shield to allow another attacker to strike at the unprotected defender.
Document 14: Adze: The adze ( ; alternative spelling: adz) is a cutting tool shaped somewhat like an axe that dates back to the stone age. It can be any tool with a sharp cutting edge. Adzes are used for smoothing or carving wood in hand woodworking, similar to an axe but with the cutting edge perpendicular to the handle. Two basic forms of an adze are the hand adze, a short handled tool swung with one hand, and a foot adze, a long handled tool capable of powerful swings using both hands, the cutting edge usually striking at foot or shin level. The blade of an adze is set at right angles to the tool's shaft (like a hoe or plane), in contrast to an axe's blade, which is in plane with the shaft. A similar, but blunt, tool used for digging in hard ground is called a mattock.
Document 15: Hafting: Hafting is a process by which an artifact, often bone, metal, or stone, is attached to a "haft" (handle or strap). This makes the artifact more useful by allowing it to be shot (arrow), thrown (spear), or used with more effective leverage (axe or hammer). When constructed properly, hafting can tremendously improve a weapon's damage and range. It is estimated that hafted weapons were most common during the Upper Paleolithic and Middle Paleolithic. Hafting was a significant milestone in the history of technology. It was one of the first tools where hominins took separate elements and united them into a single tool increasing the efficiency and use of it. The development of hafting was considered a significant milestone of humans by archaeologists. It was not only a significant improvement in the technology at the time but archaeologists also believe that hafting shows the progression and development of the human mind and shows the path toward a world of complex tool making of the past. The idea of assembling two different kinds of materials into one object that improves the functioning of the tool overall shows the mental capacity of the people of that time and gives archaeologist a better understanding of the progression of human life.
ground_truth: The adze