A stretcher, suitable for carrying out rescue of injured persons in not easily accessible areas, such as speleologists trapped in caves, people in difficulty in the mountains, people to be rescued from the water, also with the intervention of helicopters, includes a rigid board, which can easily be dismantled and reassembled without tools, the rigid part including elements that slot together to form the rigid board, designed to support the weight of the person to be carried, and is characterized in that it envisages at least one element that develops basically in a direction parallel to the longitudinal axis of the board and connects up directly to the other elements constituting the board, there being provided first members designed to prevent relative movements between the elements constituting the board, out of the plane of the board, and second members designed to prevent any relative sliding between the elements.