ὅσον ἀπὸ τοῦ ἱεροῦ ἐφεωρᾶτο τῆς νήσου → as much of the island as was in view from the temple
εἰσικνοῦμαι (-έομαι) (Α)1. έρχομαι, φθάνω μέσα2. διαπερνώ.