Calanque de Niolon, Mediterranean calanque in Le Rove, France

Calanque de Niolon is a cove on the French Mediterranean coast with a natural harbor surrounded by steep limestone cliffs and a small beach. Houses and small structures line the waterfront, built into the rocky terrain.

The hamlet grew around a military fort built in 1860, the Fort bas, which was occupied by German forces during the Second World War. That fort now houses the UCPA diving centre, one of seven federal FFESSM instructor-training bases and the only one on the Mediterranean. Other military structures, including the fort de Niolon, stand above the village.

Niolon is one of the seven federal FFESSM instructor-training bases and the only one on the Mediterranean, housed in the Fort bas built in 1860. The village around it consists mainly of this diving centre plus a few dwellings, restaurants, bars and an inn. The underwater sites of the Côte Bleue, such as l'Élevine, draw divers to the cove.

The site is difficult to reach by car, as vehicles are restricted on weekends from May through August. Parking near the train station and walking down to the cove works best.

The village is built around the UCPA diving centre, which occupies the Fort bas, a military fort built in 1860 and occupied by German forces during the Second World War. It is one of seven federal FFESSM instructor-training bases and the only one on the Mediterranean.