The Pont d'Arc is a massive natural stone arch spanning which river that gives its name to a French department?
Ardèche (river) The most famous feature is a natural stone arch spanning the river known as the Pont d'Arc (arch bridge). The source of the river lies at above sea level in the Vivarais, near the Col de la Chavade, in the forest of Mazan in the commune of Astet. After the towns of Aubenas and Ruoms, it collects the Chassezac and the Beaume river, subsequently plunging into its famous gorge below Vallon-Pont-d'Arc. It flows into the Rhône (river) at Pont-Saint-Esprit. The Ardèche flows through the following departments and communes: The most important tributaries and subtributaries to the Ardèche River include: The
Pont Treseli Pont Treseli Pont Treseli or Pont Tre-seli is a Grade II-listed single-arch stone bridge spanning Afon Cych at Abercych, Pembrokeshire, Wales. It carries the B4332 road across the boundary between Pembrokeshire and Carmarthenshire. Pont Treseli was also the name of one of several discrete settlements that now make up the linear village of Abercych. The bridge was built in the late 18th or early 19th century from rubble stone and the parapets have slate coping. It has perforated spandrels similar to Cenarth Bridge; these function during peak river flow to reduce stress on the bridge structure. The roadway is wide.