The Eye of Ra also represents the destructive aspect of Ra's power: the heat of the sun, which in Egypt can be so harsh that the Egyptians sometimes likened it to arrows shot by a god to destroy evildoers. The uraeus is a logical symbol for this dangerous power. In art, the sun disk image often incorporates one or two uraei coiled around it. The solar uraeus represents the Eye as a dangerous force that encircles the sun god and guards against his enemies, spitting flames like venom. Four uraei are sometimes said to surround Ra's barque. Collectively called "Hathor of the Four Faces", they represent the Eye's vigilance in all directions.