The Answer is a Stela.
Stela is the upright stone that has incised relief on its surface.
Stela used in ancient civilization, this is a stone which is in upright position. Mostly it was used for the indication of graves but it was also used as dedication. The stone which was fashioned by Maya civilization is known as Maya Stelae.
An environment sculpture is a sculpture that is created to interact and to have a relationship with its surrounding environment. The environment sculpture is specially designed and planned for a certain site, and the characteristics of that site. The goal of this sculpture is to interact with the site and present it better to the viewer. The reason why this type of sculpture is not universally accepted is because it is a new concept and needs more time to be fully developed.
Answer:
rhythm is the basic repetitive pulse of music