The Antiquarium Comunale is located in the small medieval burgh of Tenaglie, a locality in the municipality of Montecchio, in the province of Terni. The visit to the Antiquarium represents an opportunity for the visitor to get acquainted with the culture and customs emerging from the vast Necropolis of Fosso di San Lorenzo through the exhibited objects.
The archaeological site is in the immediate vicinity of a tributary stream of the Tiber River. Today this is a protected area called Parco Fluviale del Tevere, and is a natural park of considerable naturalistic interest. The Museum exhibits some finds of funerary goods from the Umbrian-Etruscan necropolis, in particular from the two tombs found intact and attributed respectively to adults and children. Apart from the most common furnishings, there are also the ornamental items of every day use connoting the gender and social status of the deceased possessor such as: metal hairpins and gold and silver spiraling rings to hold hair, jewels, ointment boxes and make up for women; iron spearheads and other personal metal military equipment accompanying men. The necropolis, discovered in the 19th century and methodically investigated during the course of the 1970s, was attended from the 7th to the 4th century B.C.