[a] THE INITIAL SERIES AT PALENQUE. TEMPLE OF THE FOLIATED CROSS. TEMPLE OF THE SUN. TEMPLE OF THE CROSS. INSCRIBED STEPS. HOUSE C. TEMPLE OF INSCRIPTIONS. [b] THE TWO-HEADED DRAGON. FROM PALENQUE a, TEMPLE OF THE CROSS. b, TEMPLE OF THE CROSS. c, THE PALACE HOUSE, D.