Final answer:
The Sanctuary of Fortuna Primigenia was characterized by an extensive use of concrete for large terraces and covered ramps, indicative of Roman architectural practices and a focus on Roman deities.
Step-by-step explanation:
The Sanctuary of Fortuna Primigenia, a notable historical site from the second century BCE located in modern-day Palestrina, is characterized by its utilitarian and grandiose use of concrete on a terraced hillside. It is not known for a lack of architectural ornamentation, a vast underground network of tunnels, or a preference for wooden construction, but rather for intricate design that promoted a unique experiential relationship for pilgrims. Unlike Etruscan temples that were often constructed from more ephemeral materials like wood, mud-brick, and terracotta, the Sanctuary utilized concrete extensively, which allowed for large terraces, covered ramps, barrel vaults, and indicated a focus on Roman deities in its dedication and design.