Complex sentence: Rock engravings dating back to the Mesolithic period, have been discovered on the outskirts of Akure, as has the oldest Homo Sapien fossil to have been found in West Africa thus far, dating back to around 11,000 years ago.
Split into simpler sentences: Rock engravings dating back to the Mesolithic period, have been discovered on the outskirts of Akure. Also the oldest "Homo sapiens" fossil ever found in West Africa thus far was discovered there, dating back to around 11,000 years ago.