During the 1930s, further excavations were carried out in the southeastern part of the temple of Athena and between the east front of the building and the modern boundary fence running along the road (S.S. 18). They brought to light a large altar, coeval with the preserved temple, and other structures whose function remains uncertain to this day.
The faithful could attend rites and sacrifices without entering the cella or inner sanctuary, since they were not permitted inside the temple.
North of the altar are a grouping of remains that are identified as two small temples or shrines, as well as some column bases associated with those. The dedication of these structures seems to be unknown.