ʻĪao Valley State Monument
National Natural Landmark · Wailuku, Hawaii
A lush stream-cut valley in the West Maui mountains about three miles west of Wailuku, designated a National Natural Landmark in 1972. Its landmark is the ʻĪao Needle, a green-covered lava remnant rising sharply from the valley floor. A short paved path climbs to a viewpoint over it. The valley is also the site of the 1790 Battle of Kepaniwai, one of the bloodiest in Hawaiian history, and it is treated as a place of consequence rather than only as scenery.
ʻĪao Valley Road, Wailuku, Hawaii, United States
Open daily during daylight hours. ⚠ OUT-OF-STATE VISITORS MUST RESERVE ENTRY AND PARKING IN ADVANCE ONLINE, in timed slots, and Hawaii residents with ID are exempt - this is the thing that turns people away at the gate. The car park is small. ⚠ THE VALLEY FLOODS AND THE MONUMENT CLOSES FOR HEAVY RAIN, sometimes at short notice; it has been closed for extended periods after storm damage. Check before driving up.
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