Limes Transalutanus, Roman frontier system in Muntenia, Romania.

Limes Transalutanus is a 235 km Roman frontier system running along the western edge of Teleorman's forests, between 5 and 30 km east of the Olt River. It combined a military road, forts such as Jidava and Săpata, watchtowers, and, in the south, a 3 m high vallum 10–12 m wide with wooden palisades on stone walls and a ditch. Today its earthworks support the Curtea de Argeș–Pitești–Roșiori de Vede–Turnu Măgurele railway.

Construction began in 107 AD under Marcius Turbo and was developed by Iulius Severus between 120 and 126. Septimius Severus brought the frontier to its final form between 193 and 211, advancing it some 14 km east of the Limes Alutanus. After Carpian and Getae attacks, Philip the Arab abandoned the line between 244 and 247; the Romans returned but gave up the road to the Rucăr-Bran pass from Băiculești.

The name "Transalutanus" is Latin for "beyond the Alutus," referring to the Olt River that still runs through the region today. At certain sections, visitors can see how the Romans worked with the local terrain rather than against it, following ridgelines and river bends.

The limes runs 235 km from Cumidava in the north to the forts near the Danube, between 5 and 30 km east of the Olt. The railway line Curtea de Argeș–Pitești–Roșiori de Vede–Turnu Măgurele was laid on the vallum embankment, so the earthwork can often be followed from the train. Listed sections at Câmpulung, Purcăreni, Săpata de Jos and Urlueni are the clearest to visit.

Unlike other Roman frontier systems such as Hadrian's Wall, this limes was not built as a continuous stone wall but relied mainly on earthen banks and wooden towers. This makes the remains harder to spot in the landscape, but it also means the line blends into the countryside in ways that stone walls never could.