ὅσον ἀπὸ τοῦ ἱεροῦ ἐφεωρᾶτο τῆς νήσου → as much of the island as was in view from the temple
impf. de ἄρχομαι;impf. de ἔρχομαι.
ἠρχόμην:I impf. med. к ἄρχω.II impf. к ἔρχομαι.