Armenian bas-reliefs are distinguished by abundance and variety of friezes, which can be made up of a sequence of separate elements or a single weaving of a complex pattern. Some upper embossed friezes are decorated with deep slanted parallel grooves. In the center of the filigree adornment, it is common to see an image of an antelope or Azaran-Blbul, the nightingale of a thousand voices, which appears to be flying out of the cuneiform-like ornament.