| Kāohikaipu | |
| Location: | Hawaii, United States |
| Elevation M: | 10 |
| Last Eruption: | Unknown |
| Type: | Tuff cone |
| Prominence M: | 10 |
| Coordinates: | 21.3203°N -157.6564°W |
| Map: | USA Hawaii |
Kāohikaipu (also known as Black Rock)[1] is an islet located in Honolulu County, Hawaii, off the east coast of Oahu. It is situated 0.6miles from nearby Mānana Island (Rabbit Island).[2] [3] Both Kāohikaipu and Mānana Island are northeast of Makapuʻu Point. The total size of Kāohikaipu is .[4]
Kāohikaipu′s formation was due to the Honolulu Volcanic Series, which were a series of eruptions by the Koʻolau Range that created numerous vents near Honolulu such as Diamond Head.
The islet is a wildlife sanctuary for birds and a permit is needed for people to access it.