A travois (; Canadian French, from French , a frame for restraining horses; also obsolete travoy or travoise) is a historical frame structure that was used by indigenous peoples, notably the Plains Aboriginals of North America, to drag loads over land. There is evidence to support the thesis that travois were used in other parts of the world before the invention of the wheel. Construction and use The basic construction consists of a platform or netting mounted on two long poles, lashed in the shape of an elongated isosceles triangle; the frame was dragged with the sharply pointed end forward. Sometimes the blunt end of the frame was stabilized by a third pole bound across the two poles. The travois was dragged by hand, sometimes fitted with a shoulder harness for more efficient dragging, or dragged by dogs or horses (after the 16th-century introduction of horses by the Spanish). A travois could either be loaded by piling goods atop the bare frame and tying them in place, or by first stretching cloth or leather over the frame to hold the load to be dragged. Although considered more primitive than wheel-based forms of transport, on the type of territory where the travois was used (forest floors, soft soil, snow, etc.), rather than roadways, wheels would have encountered difficulties which would have made them less efficient. As such the travois was employed by coureurs des bois in New France's fur trade with the Plains Tribes. It is possible for a person to transport more weight on a travois than can be carried on the back. Dog travois The basic dog travois consists of two aspen or cottonwood poles notched and lashed together at one end with buffalo sinew; the other ends rest splayed apart. Cross-bars are lashed between the poles near the splayed ends, and the finished frame looks like a large letter A with extra cross-bars. The apex of the A, wrapped in buffalo skin to prevent friction burns, rests on a dog's shoulders, while the splayed ends drag over the ground ... First Nations women both built the travois and managed the dogs, sometimes using toy travois to train the puppies. Buffalo meat and firewood were typical travois loads. According to The Canadian Encyclopedia, "The dog travois of pre-European times was small, capable of pulling not more than 20 to 30 kg." Travel by dog travois was slower in hot