Day Hike - Maunaulu / Pu‘uhuluhulu

Eruption fissure at Mauna Ulu
NPS Photo/J. Wei

Experience a lava landscape from the 1969-1974 Maunaulu flow. Walk by lava tree molds and climb 210 feet (64m) to the top of a forested cinder cone, Pu‘uhuluhulu (hairy hill). View Maunaulu's steaming shield, which is similar to the now inactive Pu‘uʻō‘ō cone in the distance. On a clear day you can see Mauna Loa, Mauna Kea and the Pacific Ocean.

  • Difficulty: Moderate - Most of the route is easy, but includes a 1/4 mile steep climb up Pu‘uhuluhulu cone.
  • Distance and hiking time: 2.5 miles (4.0km) roundtrip, Approximately 2.0 - 3.0 hours.
  • Trail Begins: Approximately 100 yards (91.4m) from the Maunaulu parking area. Ahu (stacked rocks) mark the trail across the lava flows. Please do not disturb them or build new ones. Stay on the trail.
  • Bring water, food, hat, sun protection and rain gear.
  • Safety: Hiking on flow fields can be hazardous due to deep earth cracks, uneven and unstable terrain, and razor-sharp lava.

Protect delicate lava formations. Surface patterns and lava trees are fragile. Reduce your impact. Please do not touch these formations.


Download the Trail Guide (pdf-7.63MB)
Or you may purchase a published version for $2.00 from the bookstore at Kīlauea Visitor Center or at the Maunaulu trailhead. Stops along this trail reveal the story of this dramatic eruption.

A graphic of a no symbol over a person stacking rocks
Leave rocks in their rightful place.
Park staff may use ahu (stacked rocks) to mark some trails and keep visitors safe. Please do not create new ones. The stacking of rocks can be culturally offensive, disorienting to hikers, and potentially against the law.

Read more about the five year eruption of Maunaulu

Last updated: September 30, 2021

Park footer

Contact Info

Mailing Address:

P.O. Box 52
Hawaii National Park, HI 96718


808 985-6011

Contact Us