(1) Springs.—The water supply of Palestinian cities came in part from the never-failing springs near which they were built. This supply was, however, seldom sufficient, so that from the early days cisterns were built to catch the water of the rainy season and conserve it for use during the summer months. These cisterns were often excavated in the solid rock, but sometimes were simple pits in the earth, over the bottom of which a coating of lime or cement had been spread.
(2) Underground Tunnels.—In time of war, when a city might be shut up for years, cities were often compelled to yield for want of water. This was especially the case if the spring lay outside the city walls. In several Palestinian cities means were taken to secure access to a spring without exposing oneself to the enemy outside the wall. One of the greatest of these undertakings was discovered at Gezer. This was a tunnel cut in the solid rock, which was entered by a long flight of rock-cut steps. At the entrance the rock formed an imposing archway 23 feet high and 13 feet 10 inches broad. These dimensions were maintained throughout about two-thirds of the length of the tunnel. The whole passage was about 130 feet long. The last third of it had to be cut through a much harder rock, where the work was much more difficult, and its workmanship was here not so good as above. The tunnel also became appreciably smaller. The passage terminated in a large cave, in the bottom of which was a spring, and was evidently constructed to enable the inhabitants to reach a water supply in time of siege. The floor of the cave is 94 feet 6 inches below the level of the rock surface under the ancient city. The whole tunnel is a remarkable piece of engineering for an early people; (see Figs. [60] and [62]).
The earth with which the mouth of the tunnel was closed contained objects which belonged to the time 1450-1250 B. C. The steps in the passageway had been before this deeply worn by many feet—so deeply worn that Mr. Macalister estimated that they must have been in use for 500 years. For these reasons he supposes that this water-passage was excavated about 2000 B. C. or soon after that date. It had ceased to be used before the Israelites conquered the place.
A similar underground tunnel leading to a spring has been found at El-Gib, Gibeon, ([Fig. 63]), and one made in Jebusite times also existed at Jerusalem. It is mentioned in 2 Sam. 5:8, and will be described in connection with Jerusalem ([p. 188]). At Rabbah Ammon an underground passage connected the old city situated on the hill with a large cistern which was roofed over so as to be concealed. To this cistern in time of siege the inhabitants could go through the passage and obtain water. It was this cistern[153] which Joab had captured (2 Sam. 12:27) when he sent to David to come and take the city. Antiochus III of Syria in the same way compelled the city to surrender in the year 218 B. C.,[154] and Herod the Great did the same thing before 30 B. C.[155]
(3) Reservoirs.—Among the sources of water supply for the cities of Palestine the so-called Pools of Solomon to the south of Bethlehem are unique. They consist of three reservoirs, partly rock-cut and in part constructed of walls of masonry, in the Wady Artas, about a mile and a half to the southwest of Bethlehem. The highest of these pools is 127 yards long and 76 yards wide, and 25 feet deep at its lower end. The central pool is 141 yards long, from 53 to 83 yards wide, and 38 feet deep. The lowest and finest of the three is 194 yards long, 49 to 69 yards wide, and 48 feet at its deepest part. In these reservoirs water from neighboring springs was collected and stored. Two aqueducts at different times conveyed it to Jerusalem as it was needed. These aqueducts are now known respectively as the Low Level Aqueduct and the High Level Aqueduct. The High Level Aqueduct appears to be the older. In recent years the Low Level Aqueduct has been repaired, so that these “pools” still contribute to the water supply of Jerusalem.
There is no evidence that Solomon built these. His name has been attached to them solely on account of Eccl. 2:6: “I made me pools of water.” The whole structure of these and their aqueducts seems rather to be Greek or Roman work; (see [Fig. 64]).
Evidence for the dates is not conclusive,[156] but there is some probability that the pools were constructed by John Hyrcanus I, 135-105 B. C., who made the High Level Aqueduct, and that the Low Level Aqueduct was constructed by Herod the Great. This is much longer than the High Level Aqueduct, as it makes a detour toward Gebel Fureidis, where Herod constructed a palace, to which he conveyed water. This Low Level Aqueduct is probably the one afterward repaired by Pontius Pilate.[157]