http://agathe.gr/overview/the_altar_of_zeus_and_statue_of_hadrian.html
The Altar of Zeus The Agora Excavations began with the aim of revealing the monuments and history of the ancient Agora. Of course, every artifact or feature that was exposed held importance, but when something ... Of course, every artifact or feature that was exposed held importance, but when something extraordinary was brought to light, its discovery generated great excitement. View of the orthostate block (A 404) of the Altar of Zeus Agoraios Nb. ... On July 23, 1931, the excavator filled five pages of his notebook describing a significant discovery of the first excavation season: "A large structure once covered a large part of [the] area, it was almost certainly an Altar." A few pages later he added another entry describing an "Altar Block: the large block of white marble with moulding above and below; shown on photos p. 507" (Nb. ... Visible in the foreground is a column base and foundation blocks of the Metroon; to the left the statue of Emperor Hadrian was found lying in the Great Drain. In the center background are the steps of the Altar of Zeus Agoraios and its large altar block.