Fatu Huku, also known as Fatu Uku, is a small island in the
The island is essentially a huge rock, looming steep-sided out of the ocean and rising to a flattened plateau with a maximum elevation of 361 metres (1,184 ft). Fatu Hutu is the youngest of the volcanic Marquesas Islands, estimated to be only 1.3 million years old which accounts, in part, for its ruggedness as erosion has not yet carved out valleys and beaches.
Fatu Huku is a dry island compared with most high islands in Polynesia, receiving only an estimated 800 millimetres (31 in) to 1,000 millimetres (39 in) of precipitation annually. The altitude is insufficient to capture much of the moisture from the predominantly easterly winds. The dryer conditions and steep terrain limit the variety of vegetation. Forty-eight percent of the land, mostly on top of the plateau, is covered with