Ancient CivilizationsSubmerged Ancient Shipwrecks, Roads, And Columns Found Near Ancient City Of Ptolemais, Libya Posted on March 30, 2026 by Administrator A significant underwater archaeological discovery has been made at Ptolemais, a coastal city of ancient Cyrenaica in what is now northeastern Libya. Archaeologists have identified submerged shipwrecks, roads, and architectural elements such as columns lying beneath the sea.