Charta T-O esti simplices representatzion senosio djahanes: en pepli, oina mediota pro Asiam, i aliam mediota pro Europam i Africam. Describosteto Isidore Seviljiske en enosio operasu “De Natura Rerum” i “Etymologiae” peri oivom VII.

The T-O Map is a simple representation of the old world: in a cicle, one half for Asia, and another half for Europe and Africa. It is described by Isidore of Seville in his works “De Natura Rerum” and “Etymologiae” around the 7th century.