The Sigil of Baphomet is the official insignia of the Church of Satan, founded 1966.[1][2][3][4] The sigil has been called a "material pentagram" representational of carnality and earthy principles.[5] The Church describes the symbol as the "...preeminent visual distillation of the iconoclastic philosophy of Satanism."
While the eponymous Baphomet had been depicted as a goat-headed figure since at least 1856, the goat's head inside an inverted pentagram was largely popularized by the modern Church of Satan.