Giant Decepticon insignia

''The Giant Decepticon Symbol is a Decepticon operations center in the cartoon portion of the Generation 1 continuity family.

Ever the masters of stealth and subtlety, the Decepticons created a temporary operations base in the desert, shaped like a Giant Decepticon Symbol. The base was accessible through the "chinks" in the stylized insignia's "face". It came complete with energy cages for holding captured Autobots, though only Starscream got to actually test them out.

They used it to rewire toasters.