It is also the location of Central Island National Park, which is governed by the Kenya Wildlife Service.

[1] Central Island is composed of more than a dozen craters and cones, three of which are filled by small lakes.

The two largest lakes partially fill craters up to a kilometre wide and about 80 m deep, the floors of which are near sea level.

An E-W-trending chain of small explosion craters cuts the eastern side of the 3-km-wide island.

The youngest Central Islands tuffs and lavas may be as young as Holocene (Karson and Curtis, 1992).