Returning to the eastern end of the Well-house terrace wall, a few steps up the slope lead to the terrace behind the well-house, the so-called Well-house terrace, where a brief stop can be made on the way up to the Temple Terrace. Here a row of gneiss columns are standing, a few meters north of the Well-house Terrace wall.

    Those columns were part of a Roman stoa facing south. However, since the retaining wall of the Temple Terrace, which stands behind these columns seems to have served as the rear wall of the stoa, and since the architectural blocks found on the Temple Terrace indicate that this retaining wall was used also as foundation for the stylobate of a 2nd century AD stoa facing north, it appears that the gneiss columns must have formed the bottom story of a stoa with two stories towards the south and one story to the north. Almost no excavation at all has been undertaken behind the row of gneiss columns; it is therefore not known whether there is any foundation for an inner colonnade or other kinds of support for the upper story and the roof. It is also not known whether the upper story had an open front not only to the north but also towards the south.

The Well-house Stoa. View from the east.