Līhau Section is the driest of the four sections of the West Maui Natural Area Reserve, it is a steep-sloped volcanic remnant that extends from dry leeward lowlands to a wet summit with cliffs on all sides. The 1988 survey indicated that the summit of Līhau remains ungulate-free. A rare grassland and shrubland occur near the lower boundaries of the Reserve, and many rare plants are known from Līhau.