Wonder No 6

Wonder No. 6

The Great Pharos Lighthouse

In the fall of 1994 a team of archaeological scuba divers entered the waters off of Alexandria, Egypt. Working beneath the surface they searched the bottom of the sea for artifacts. Large underwater blocks of stone were marked with floating masts so that an Electronic Distance Measurement station on shore could obtain their exact positions. Global positioning satellites were used to further fix the locations. • The information was then fed into computers to create a detailed database of the sea floor. Ironically, these scientists were using some of the most high-tech devices available at the end of the 20th century to try and discover the ruins of one of the most advanced technological achievements of the 3rd century, B.C.: • The Pharos. It was the great lighthouse of Alexandria, one of the Seven Wonders of the Ancient World. • The story of the Pharos starts with the founding of the city of Alexandria by the Macedonian conqueror Alexander the Great in 332 B.C.. Alexander started at least 17 cities named Alexandria at different locations in his vast domain. Most of them disappeared, but Alexandria in Egypt thrived for centuries and continues even today. • Alexander the Great choose the location of his new city carefully. Instead of building it on the Nile delta, he selected a site some twenty miles to the west, so that the silt and mud carried by the river would not block the city harbour. South of the city was the marshy Lake Mareotis. After a canal was constructed between the lake and the Nile, the city had two harbours: one for Nile River traffic, and the other for Mediterranean Sea trade. Both harbours would remain deep and clear • Alexander died soon after in 323 B.C. and the city was completed by Ptolemy Soter the new ruler of Egypt. Under Ptolemy the city became rich and prosperous. However, it needed both a symbol and a mechanism to guide the many trade ships into the busy harbour. Ptolemy authorized the building of the Pharos in 290 B.C., and when it was completed some twenty years later, it was the first lighthouse in the world and the tallest building in existence, with the exception of the Great Pyramid. • The lighthouse's designer was Sostrates of Knidos. Proud of his work, Sostrates, desired to have his name carved into the foundation. Ptolemy II, the son who ruled Egypt after his father, refused this request wanting his own name to be the only one on the building. A clever man, Sostrates had the inscription: • SOSTRATES SON OF DEXIPHANES OF KNIDOS ON BEHALF OF ALL MARINERS TO THE SAVIOR GODS • chiselled into the foundation, then covered it with plaster. Into the plaster was chiselled Ptolemy's name. As the years went by the plaster aged and chipped away revealing Sostrates' declaration. The lighthouse was built on the island of Pharos and soon the building itself acquired the name. The connection of the name with the function became so strong that the word "Pharos" became the root of the word "lighthouse" in the French, Italian, Spanish and Romanian languages. • The lighthouse was apparently a tourist attraction. Food was sold to visitors at the observation platform at the top of the first level. A smaller balcony provided a view from the top of the eight-sided tower for those that wanted to make the additional climb. The view from there must have been impressive as it was probably 300 feet above the sea. • There were few places in the ancient world where a person could ascend a man-made tower to get such a perspective. How then did the world's first lighthouse wind up on the floor of the Mediterranean Sea? Most accounts indicate that it, like many other ancient buildings, was the victim of earthquakes. It stood for 1,500 years but was damaged by tremors in 365 and 1303 A.D. Reports indicate the final collapse came in 1326. • Did the divers actually find the remains of Pharos in the bottom of the harbour? Some of the larger blocks of stone found certainly seem to have come from a large building. Statues were located that may have stood at the base of the Pharos. Interestingly enough, much of the material found seems to be from earlier eras than the lighthouse. Scientists speculate that they may have been recycled in the construction of the Pharos from even older buildings.