Wilderness Landscape & Natural Heritage
Ka‘ū Forest Reserve, located on the southern slopes of Mauna Loa on Hawai‘i Island, encompasses a rugged, forested region spanning a wide elevation gradient that supports a rich diversity of native ecosystems. Established in 1929, this reserve protects vital habitat for many endemic birds, plants, and the endangered Hawaiian hawk ('Io). The area features lush native rainforests composed largely of ’ōhi‘a lehua and koa trees, with lower elevation dry forests that contrast strikingly with the wet uplands. The reserve’s undisturbed tracts are critical for watershed protection, feeding streams that flow into coastal valleys. The landscape includes steep ridges, streams, and lava flows creating challenging terrain for exploration. Recreational access is limited and primarily appeals to experienced hikers and nature enthusiasts due to minimal infrastructure and remote conditions. Notable landmarks include views of the vast Ka‘ū Desert, the nearby Hawaiian Volcanoes National Park boundary, and close proximity to the scenic Ka‘ū Coast. Birdwatchers come to see rare species such as the nēnē (Hawaiian goose) and akohekohe (crested honeycreeper). The reserve’s pristine nature offers solitude amid Hawaii’s rare native forest ecosystems, making it a vital refuge for conservation and low-impact outdoor recreation.
