Matiernus expedition: Ptolemy wrote that around 90 AD Julius Maternus (or Matiernus) carried out a mainly commercial expedition. From the Sirte gulf he reached the Oasis of Cufra and the Oasis of Archei, then arrived -after 4 months travelling with the king of the Garamantes- to the river Bahr Salamat and Bahr Aouk, near modern-day Central African Republic in a region then called Agisymba. He went back to Rome with a rhinoceros with two horns, that was shown in the Colosseum.[7]