The work of goiano Siron Franco started off from grotesque figures, which were already a form of criticism in themselves, intensified in the following series, as "Cesium", about the radioactive accident that happened 1987. Since the 1990's, however, his production has evolved into something more abstract, as shown in works such as "Front Page" and "The Circle", in which one can catch a glimpse of eventual figures while still perceiving something hidden, a message that hides behind symbols.