Temple O and Temple A of which little remains except for the rocky basement and the altar which was constructed between 490 and 460 BC. They had nearly identical structures, similar to that of Temple E on the East Hill. The peristyle was 16.2 metres wide and 40.2 metres long with 6 x 14 columns (6.23 metres high). Inside there was a pronaos in antis, a naos with an adyton and an opisthodomos in antis, separate from the naos. The naos was a step higher than the pronaos and the adyton was a step higher again. In the wall between the pronaos and the naos in Temple A two spiral staircases led to the gallery (or floor) above. The pronaos of Temple A has a mosaic pavement showing symbolic figures of the Phoenician goddess Tanit, a caduceus, the Sun, a crown, and a bull's head, which testifies to the reuse of the space as a religious or domestic area in the Punic period. Temple O was dedicated to Poseidon or perhaps Athena; Temple A to the Dioscuri or perhaps to Apollo.