It was built in Roman Emperor’s Era and it consists of a rectangular room with a marble gate in front of its main gate. Scientists support the existence of Mithra’s worship, a god originated from the East. Mithras, or elsewhere “the sun” was a god whose mystic worship flourished between 2d and 3d century A.C. in the Roman Empire.
The archaeological remains revealed the close relation of Mithras and Romans with almost 400 excavated places around the past acreage of the Roman Empire. Romans attributed their Mithraic mysteries (the mystery religion known as Mithraism) according to sources relating to Mithra.
The faithful of Mithraism gathered in small autonomous groups, exclusively by men who gathered for fellowship and worship in small rooms with special decoration. Initially these rooms were called “caves” and the subsequent word “Mithraio” was a following neologism. Most of the times, “Mithraia” were inside of a cave or were curved on rocky hill. Moreover, they were constructed in such a way to imitate the shape of a cave with adding vaults or decoration or even isolates them in dull exterior or basement areas. completely different from the classical temple, as the outdoor decor and the venue for official ceremonies were away.
According to Christian historical sources which thought to be not so accurate because of their hostility to any pagan action, the worship of Mithras and its shrine belongs to the last phase of the Eleusina’s Sanctuary. The destruction of the sanctuary was accompanied by the killing of all clergy, including the last Hierophant, which however was not an Athenian, a native of the genus Eumolpidae but one priest who had embraced the worship of Mithras.