Ikom monoliths
Nigeria
The Ikom monoliths are a series of volcanic-stone monoliths from the area of Ikom, Cross River State, Nigeria. The Ejagham may have engraved the monoliths around 200 CE. The monoliths are also called Akwaanshi or Atal among the Ejagham people.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).