Since January 1826, there have been four mithraea found at Nida-Heddernheim which is located in a section of the city of Frankfurt am Main. The excavation of the first mithraeum was made by Friedrich Gustav Habel. The major finds included a two sided cult relief that was on a pivot at the top and a socket at the bottom. The tauroctony is on the front side and shows Mithras slaying the bull. This is the best known tauroctony and is published in most books on Mithras. On the reverse side, Mithras and Sol are engaged in the communion feast. Sol is offering Mithras grapes.