Hohlfelder believes he now knows the reason. An important clue was supplied by an amateur archeologist and yachtsman who discovered several underwater structures just offshore while snorkeling in 1970. Hohlfelder has known about the brick tanks for some time but only recently received permission from the Turkish government to study them. These submerged tanks, says Hohlfelder, were used to breed murex snails, the source of an expensive dye called Tyrian purple, favored by Roman emperors and aristocracy in a tradition harking back to the Phoenicians.
Just outside the city, Hohlfelder found a large pile of murex shells--a snail-industry waste site. The earliest city walls show that Aperlae was probably founded by Greeks in the fourth century b.c., but it seems to have reached its height during the Roman period, from the first century b.c. to the sixth century A.D. The remarkably intact city includes well-fortified walls, dwellings, streets, and a large, early Christian church.
Aperlae declined with the fall of the Roman Empire. The church was apparently converted into a fortress as a last-ditch effort at protection. Aperlae’s history comes to an abrupt end in the mid-seventh century; pirate attacks and incursions by Persians probably finished the city off.


