On the Kamanaiki side of the Kalihi Valley there was once a shallow cave called Keana Kamano. It was called the cave of the sharks because the big shark gods from Pearl Harbor often went there to rest.
Keana Kamano led into the fabulous underground cave believed in olden times to occupy the center of the island of Oahu.
One branch of the cave led around and under the mountains to Pearl Harbor. Another branch of the cave led to the center of the Island where there was a sacred pool for swimming.
Hawaiians living today can tell of elders who once traveled these caves and who once swam in the sacred pool. An earthquake about 1900 closed up the caves and no one has been known to travel them since.
It may be that the cave-in of the Wilson Tunnel occurred over the old lava tube leading to Pearl Harbor. (Taylor, 1954)
The shark referred to is Kamohoali‘i, king of the sharks, who is the older brother of Pele, the Hawaiian volcano goddess. On the long trip of Pele’s family to Hawai‘i, it was Kamohoali‘i who acted as the navigator. Don Mitchell, who said that earthquakes in 1900 caused the collapse of the cave (1993:146), states: His [Kamohoali‘i] favorite pastime was to swim through the extensive water filled lava tubes or tunnels that extended from Pearl Harbor to areas under Kalihi Valley. As the tunnels rose above sea level, he assumed his human form and walked to his cave, Keanakamanō, on Kapālama Heights. (Sterling and Summers 1978:323). From An Ethnohistorical Study of Kapālama Ahupuaʻa: 16.