Contour Lines.
A perceived line that marks the edge of a figure as it curves back into space. Contour lines are created by the edges of things. Contour lines are lines that surround and define the edges of a subject, giving it shape and volume
Drums because you can beat on anything almost and get a sound
The answer is weaving.
It is the process of interlacing materials to produce cloth used for
making clothing and other products. With
the development of the power loom during the Industrial Revolution it produced
more cloth by accelerating the weaving processs.
