There are theaters also at Delphi (Fig. 26), Megalopolis (Figs. 27 and 72, 1_a_), and Sicyon, but it is not possible to discuss every theater on the Greek mainland. We must not, however, pass by the small theater at Oropus in northern Attica (Figs. 56 f. and 72, 4).[214] It stood in the precinct of Amphiaraus and dates from the first and second centuries B.C. The auditorium is almost completely destroyed; evidently the seats were always wooden bleachers. Five marble thrones, however, stand within the orchestra, an unusual arrangement which recurs at Priene (see p. 113, below). Another peculiarity is that no orchestra, in the narrowest sense, is marked out, either in whole or in part. But if a circle is drawn through the seats of honor, as has been done in Fig. 56, it falls just outside the proscenium. On the contrary, a circle as determined by the lowest row of seats cuts into the proscenium slightly. The parodi have been banked up so that their outer entrances are on a level with the top of the proscenium. The chief merit of this theater consists in the fact that the superior preservation of its scene-building and the presence of two inscriptions enable us to form a fairly clear picture of how a proscenium and an episcenium looked at this period. The front wall of the scene-building is pierced by one door; the side walls are continued so as to frame the proscenium but themselves turn sharply back along the parodi without forming projecting parascenia. The proscenium consisted of Doric half-columns and was eight and a quarter feet high. Its central intercolumniation was intended to be filled by a door, but the four on either side were so made as to be readily filled in with painted panels (Fig. 72, 4). Across the architrave ran an inscription: “... having been agonothete, dedicated the proscenium and the panels.” Another inscription ran along the top of the episcenium: “... having been priest, dedicated the scene-building and the doors.”[215] The last item refers to five (or three) large openings in the front wall of the episcenium. Similar doors are found at Ephesus, and they were doubtless used in connection with the crane (μηχανή, see pp. 67 f., above, and p. 289, below). All in all, Oropus contributes very materially to our knowledge of the ancient theater. [Illustration: FIG. 56.—Ground Plan of the Theater at Oropus in Attica See p. 108, n. 1] [Illustration: FIG. 58.—Ground Plan of the Graeco-Roman Theater at Termessus See p. 110, n. 1]