What was the climate of the fayum depression like during the oligocene?

The climate was very cold, during one of the most important Ice Ages or Glaciations that affected the whole planet. During the Oligocene, around the world began a cooling that drastically changed the life of mammals, the world was impacted by one of Earth's most dramatic climate changes during The Age of Mammals. A rapid onset of Antarctic glaciation resulted in planetary cooling, which began about 34 million years ago, at the end of the Eocene and early Oligocene.