The Great Lighthouse at Alexandria
The great lighthouse at Alexandria, Egypt, stood on the island of Pharos. (Copyright Lee Krystek, 2011)
In the fall of 1994 a team of archaeological divers donned scuba equipment and 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 and remnants of sculpture were marked with floating masts so that an electronic distance measurement station on shore could obtain their exact positions. Global positioning satellites were then used to further fix the locations. The information was then fed into computers to create a detailed database of the sea floor.
http://www.unmuseum.org/pharos.htm
