A fire pot is a container, usually earthenware, for carrying fire. Fire pots have been used since prehistoric times to transport fire from one place to another, for warmth while on the move, for cooking, in religious ceremonies and even as weapons of war. Early times Fire pots were vital to the development of civilization. Once humans had learned to contain, control and sustain fires, they had an invaluable tool for cooking food that would have otherwise not been edible. Fire pots were also useful for sharpening spears, hollowing out canoes, baking pottery, and many other tasks, such as staying warm. At first, humans relied on natural fires, caused by lightning strikes or other natural occurrences, to provide them with a flame to start their own fires. Since natural fires are not very common, humans learned how to make fires by igniting tinder from sparks caused by striking stones together, or by creating friction using a bow drill. Given the time-consuming nature of early firestarting, humans eventually began to use earthenware vessels, or fire pots, in which slow-burning fires could be kept alight indefinitely by using small quantities of fuel. Nomadic people could carry these small fires with them, using them to start larger fires for their evening camps. Archaeologists found that fire pots were being used 10,000, or more, years ago, according to finds during the 1936-37 dig in Fells Cave , of which is located in the valley of the Rio Chico, not far from the Strait of Magellan. Semi-nomadic and sedentary people would have made or acquired more advanced types of fire pots, as opposed to the fully nomadic people who would have used more primitive types. Being more sedentary, people were able to more effectively work with clay, and would have kilns to bake the pottery in, instead of using the traditional fire-baking methods. Warmth Portable fire pots have long been used as a source of warmth. Kangdi A Kangdi is a traditional earthen fire pot from Kashmir, used to warm the hands or feet. In Kashmir, in winter, people usually wear a "Phiran" or long woolen gown over their normal dress. To keep the inside of the Phiran warm, they sometimes use a Manann, a fire-pot made of clay. But with no insulation on its clay handles, the Manann is inconvenient. A Kangdi is an improved version of the Manann, a semi-spherical clay pot enclosed