Hiram had to dispose of very considerable resources; his receipts must have been far in excess of Solomon's. Of the silver of Tarshish which the ships brought from Gades to Tyre, of the gold imported by the trade to Ophir, of the profits of the maritime trade with the land of incense, a considerable percentage must have come into the treasury of the king, and he enjoyed in addition the payments of Solomon. In any case he had at his command means sufficient to enlarge, adorn, and fortify his city. Ancient Tyre lay on the seashore; with the growth of navigation and trade, the population passed over from the actual city to an island off the coast, which offered excellent harbours. On a rock near this island lay that temple of Baal Melkarth, the god of Tyre, to which the priests ascribed a high antiquity; they told Herodotus that it was built in the year 2750 B.C. (I. 345). Hiram caused this island to be enlarged by moles to the north and west towards the mainland, and protected these extensions by bulwarks. The circuit of the island was now 22 stades, _i.e._ more than two and a half miles; the arm of the sea, which separates the island from the mainland, now measured only 2400 feet (three stades).[478] The whole island was surrounded with strong walls of masonry, which ran out sharply into the sea, and were washed by its waves, so that no room remained for the besieger to set foot and plant his scaling-ladders there. On the side of the island towards the mainland, where the docks were, these walls were the highest. Alexander of Macedon found them 150 feet high. The two harbours lay on the eastern side of the island--on the north-east and the south-east; on the north-east was the Sidonian harbour (which even now is the harbour of Sur); and on the south-east the Egyptian harbour. If the former was secured and closed by huge dams, the latter also was not without its protecting works, as huge blocks in the sea appear to show, though the dams here were no longer in perfect preservation even in Strabo's time. On the south shore of the island, eastward of the Egyptian harbour, lay the royal citadel; on the north-west side a temple of Baal Samim, the Agenorion of the Greeks. The rock which supported the temple of Melkarth appears to have been situated close to the city on the west.[479] This, like the temple of Astarte, was adorned and enlarged or restored by Hiram. For the roof he caused cedars of Lebanon to be felled. In the ancient shrine of the protecting deity of the city, the temple of Melkarth, he dedicated a great pillar of gold, which Herodotus saw there 500 years later beside an erect smaragdus, which was so large that it gave light by night. This was perhaps a symbol of the light not overcome by the darkness.[480]