What is it?

A tall, thin character with a long neck sits on a stone, holding a staff and pointing at a large stone tablet with inscribed text, while a line of small, round characters with crowns stand to the right, looking up at him; the characters' mouths open and close in a rhythmic, synchronized manner, suggesting they are singing or chanting in unison. The scene is set in a rocky, outdoor environment with other stone structures and trees in the background.