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Fountain of the Virgin: The perennial source from which the Pool of Siloam (q.v.) is supplied,
the waters flowing in a copious stream to it through a tunnel cut
through the rock, the actual length of which is 1,750 feet. The spring
rises in a cave 20 feet by 7 A serpentine tunnel 67 feet long runs
from it toward the left, off which the tunnel to the Pool of Siloam
branches. It is the only unfailing fountain in Jerusalem. The fountain
received its name from the "fantastic legend" that here the virgin
washed the swaddling-clothes of our Lord. This spring has the singular
characteristic of being intermittent, flowing from three to five times
daily in winter, twice daily in summer, and only once daily in autumn.
This peculiarity is accounted for by the supposition that the outlet
from the reservoir is by a passage in the form of a siphon.