Olumo Rock is a 137-metre-high granite outcrop rising directly out of the centre of Abeokuta, and the defining sight of the city. It is sacred to the Egba people, who took refuge in its caves during the inter-tribal wars of the early 19th century and built the city around it. The rock has been developed for visitors with concrete steps, handrails, and a modern lift up the lower section; the upper climb is a scramble up the bare granite with knotted ropes for handholds.
The summit gives a 360-degree view across Abeokuta and out to the surrounding hills and forests. On a clear day you can see for fifty kilometres. The caves at the foot, where the Egba hid from Dahomey slave raiders, are now a small shrine; a few elderly priestesses still live in shacks on the lower slopes. Entry fee around N₦2,000 for foreigners; guides are mandatory and recommended in any case for the cultural background. Avoid midday in the dry season — the granite is searingly hot.