A previously unknown temple of Mithras has been discovered in Corsica, in Lucciana, on the site of the Roman colony of Mariana.
French website l’Express carries the story with more care than most, from which I learn of the following details.
Mariana, a Roman colony founded around 100 BC, reached its peak in the 3rd or 4th century. The excavations are in the peripheral area of the city, according to the Inrap (National Institute for Preventative Archaeological Research) communique. The sanctuary consists of a Mithraeum and its antechamber.
The main cult chamber as usual consists of a central aisle, dug out, with two raised benches on either side, surrounded by a lime-coated wall. Two vaulted brick niches are present in the thickness of the benches. One still contained three intact oil lamps.
At the top of the corridor was the bas-relief of Mithras, of which three fragments were found. Other marble elements were found, including the head of a woman. Two bronze bells, many broken lamps, and some jars of fine paste could be liturgical furniture.
A plaque of bronze and another of lead bear inscriptions which remain to be decyphered. The exact causes of the destruction of the sanctuary are unknown.
There is more stuff at the Inrap site here.