From this point a gap (the troue dEpinal) was left, so as in some sort to canalize the flow of invasion (General Bonnal), until the upper Moselle was reached at Epinal (q.v.).
Here another entrenched camp was made and from it the Moselle line (qv.) of forts darrit continues the barrier to Belfort (q.v.), another large entrenched camp, beyond which a series of fortifications at Montbliard and the Lomont range carries the line of defence to the Swiss border, which in turn is protected by works at Pontarlier and elsewhere.
It is situated on the right bank of the Moselle, about 6 m.
Perhaps the oldest remains are some of the piers -and buttresses of the bridge over the Moselle, which may date from about 28 B.C. The well-preserved amphitheatre just outside the modern town to the south-east was probably built in the reign of Trajan or Hadrian.