Zuma rock

Zuma Rock is a large natural monolith, or inselberg, an igneous intrusion composed of gabbro and granodiorite and of Precambrian age, located in Madalla, a town in Niger State, Nigeria. It is situated in the west of Nigeria's capital, Abuja, along the main road from Abuja to Kaduna, off Madalla, and is sometimes referred to as the "Gateway to Abuja from Suleja". Zuma Rock rises approximately 725 m... (Wikipedia)