« Starting from Narni, to avoid suspects or because who fears is uncertain in his plans, he followed the waterway of Nera River and then of Tiber. So he increased the popular grudge because, once landed with the ship at Cesari’s grave, in broad daylight and with riverside full of people, they advanced cheerful in face, him among a crowd of clients and Plancina with her following of women» (Tacitus, "Annales", Book III, 9)  However, the navigability of the Nera River is related only with the last part of its waterway, included between Stifone and the confluence of Nera with the Tiber. The narrow gorges below Narni, in fact, make impossible this practice. The geographical coordinates of the ancient river port of Narni were revealed in the 16th century by the Jesuit Fulvio Cardoli, who saw in person its traces. Below his contribute:  "About one thousand steps beyond Taizzano, there was time once a port along the Nera River, as demonstrated by some traces" (F. Cardoli, "Ex notis Fulvij Carduli S.J. presbyteri Narniensis de Civitatis Narniae, Origine et antiquatibus"). The river port was found in the same position in the year 1879, when an informer of the marquis Giovanni Eroli noticed the remains of two big pilasters used to fasten the boats. With the construction of some dams up stream, and the consequent rise of the river level, the port was tacitly believed as submerged. The remains of it, contrary to popular belief, were however in the same place described by the Jesuit, although hidden among the bushy vegetation. Only in the year 1992 was the port mentioned again in local historiography, when the archaeologist Roberto Nini wrote of the area. Some years later, the river port was visited by the superintendent for the regional archaeological heritage, Daniela Monacchi, but the close presence of an ancient shipyard was not noticed, due to a body of stagnant water which has obstructed the passage. Meanwhile, someone had decided to patrol the channel which hosts the remains of the shipyard, in particular a group of people from the close village of Nera Montoro who knew the old popular story regarding the presence of a similar structure. After perceiving its destination, the local artist Alvaro Caponi has tried to reconstruct the hypothetical functioning producing some sketches, but despite its importance, the discovery has remained without any development.