Ogbunike Caves
The Ogbunike Caves were a cave system in Africa on Earth.

By the time she was eight years old, Joann Owosekun had learned to hold her breath for at least ten minutes while freediving in the Ogbunike Caves for abalone. Though she hadn't spoken of it before to close friend Keyla Detmer, she explained to the bridge crew of the  in 3189 that it was "as much for tradition as for sustenance." ()

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Earth geography