Olumo Rock
Olumo Rock is a mountain in south-western Nigeria. It is located in the city of Abeokuta, Ogun State, and was normally used as a natural fortress during inter-tribal warfare in the 19th century. Its patron spirit is venerated in the Yoruba religion as an orisha. In addition, Olumo Rock is an important paleontological archaeological site that has yielded an outstanding collection of stone tools such as hand axes, artificially shaped spherical rocks, pick-like tools and hammer rocks, dating back approximately 1.5 million years. The name olumo is the combination of two words: "olu" which means god/deity, and "mo" which means moulded.