Sound Technology used to carve stone and coordinates in space and directed energy similar with laser beams and light. Drawings are in Sumerian tablets but drawings are misinterpreted. No one knows how to use this instruments. There are few of them in existence now. The technology was used to soften the top layer so it was like frosting so the stone can be easily carved.
That instrument was used to isolate the too layer from the rest. The sound was not audible to human ear.
The form of the object resembled that of the stone. To use it you only needed to aim it.
from Newearth video Silvie Ivanova.