The Aiguillon is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in southern France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, a tributary of the Cèze

Cèze

The Cèze is a French river, a tributary of the Rhone. It runs through the departments of Lozère and Gard in the Languedoc-Roussillon region. Its source is in the Cévennes mountains, near Saint-André-Capcèze...

. It is the departments of Gard

Gard

Gard is a département located in southern France in the Languedoc-Roussillon region.The department is named after the River Gard, although the formerly Occitan name of the River Gard, Gardon, has been replacing the traditional French name in recent decades, even among French speakers.- History...

, in the Languedoc-Roussillon

Languedoc-Roussillon

Languedoc-Roussillon is one of the 27 regions of France. It comprises five departments, and borders the other French regions of Provence-Alpes-Côte d'Azur, Rhône-Alpes, Auvergne, Midi-Pyrénées on the one side, and Spain, Andorra and the Mediterranean sea on the other side.-Geography:The region is...

 region

Régions of France

France is divided into 27 administrative regions , 22 of which are in Metropolitan France, and five of which are overseas. Corsica is a territorial collectivity , but is considered a region in mainstream usage, and is even shown as such on the INSEE website...

. The source of the River Aiguillon is on Mont Bouquet, west of Lussan

Lussan, Gard

Lussan is a commune in the Gard department in southern France.-Population:-References:*...

. It flows through Lussan, Les Concluses, Goussargues where it joined by the Merderis and it flows into the Cèze upstream of La Roque-sur-Cèze

La Roque-sur-Cèze

La Roque-sur-Cèze is a commune in the Gard department in southern France.-Population:-References:*...

.

Les Concluses

The Aiguillon goes dry during the summer, but has carved out a rocky gorge called "Les Concluses" on the limestone plateau. From a viewpoint high above, the gorge is riddled with deep geological structures known as 'marmites des geants' in French. In summer it is popular with walkers, who follow the water course under the steeply overhanging limestone valley sides. The walls of the gorge have many climbing routes of an average 8a difficulty. Similarly, the walls of the valley contain many caves and potholes . The largest one is the "Baume du Biou," or the Grotto of the Ox.