Frieze from the Temple of Apollo in Circo: Rome
A composite image from five separate photographs of the largest surviving fragment from the interior frieze from the Augustan-period Temple of Apollo in Circo (the "in Circo" refers to the location of the temple on the perimeter of the Circus Flaminius in Rome). The temple is also referred to as the Temple of Apollo Sosianus after the name of its patron, C. Sosius. The scene shows a triumphal procession (left half, with captured barbarians) and animals being led to sacrifice. The procession seems to refer to the triple triumph celebrated by Augustus (29 BCE) and is thus dated to ca. 25 BCE.
Capitoline Museums (ACEA/Montemartini)
Compare to a nearly contemporaneous depiction of a sacrificial procession from the Ara Pacis in Rome (13-9 BCE; sacrifice to Pax):