CIMRM 772 - Mithraeum. Merida, Spain.
In 1902-3 a bull-ring was constructed in the Spanish town of Merida. In the process Roman statues and inscriptions were found. Unfortunately no archaeologist was consulted, and no excavations seem to have been undertaken. The discoveries were made in and around the little house where the director of works for the building project was living, but no record was made of how or where they were found.1 It is unclear whether the statues come from a Mithraeum, or whether from some secondary cache.
A Roman house behind the bullring is known as the "Casa dei Mitreo" from its proximity to the site, but has nothing to do with the finds.
A small Mithraeum was found recently in an emergency excavation about 100m from the bull-ring, but this is clearly not the same location.
From: Roger Beck, Mithraism since Franz Cumont, p.2033.