Mauna Ulu Hike: Explore Kīlauea’s Historic Lava Flows
The Mauna Ulu hike is one of the most dramatic trails in Hawaiʻi Volcanoes National Park. This trail takes you across lava flows from one of Kīlauea’s longest rift zone eruptions, which lasted from 1969 to 1974.
Along the way, you can see how lava reshaped the land. The trail passes old lava flows, volcanic vents, and wide-open views of the rugged landscape.
The History of the Mauna Ulu Eruption
The Mauna Ulu eruption began on May 24, 1969, and continued until July 22, 1974. During that time, lava covered large sections of the park and changed the area around Chain of Craters Road.
Some of the most famous eruption footage in Hawaiʻi Volcanoes National Park came from this flow. Lava fountains rose high into the air. Lava also poured over cliffs in massive waterfalls as it moved toward the sea.
Park scientists observed the eruption up close. At times, they came dangerously close to the lava fountains and fast-moving flows. Their stories help visitors understand the power of Kīlauea and the risks of studying active volcanoes.
What You’ll See on the Mauna Ulu Hike
The Mauna Ulu hike takes about two hours for many visitors. Before you begin, stop at the Hawaiʻi Volcanoes National Park Visitor Center and ask about the Mauna Ulu trail guide.
The guide helps explain the landscape as you walk. You will see the Mauna Ulu vent, lava shields, and areas where lava filled older craters. These stops make the hike more meaningful because you can connect the views with the eruption’s history.
One of the most interesting parts of the trail is the mix of lava textures. You can see rough, jagged ʻaʻā lava near smooth, rope-like pāhoehoe lava. These different flows show how lava moves and cools in different ways.
How to Get to the Mauna Ulu Trail
To reach the trailhead, drive along Chain of Craters Road in Hawaiʻi Volcanoes National Park. Look for the Mauna Ulu parking area.
Bring plenty of water, sturdy shoes, sun protection, and a light jacket. Weather can change quickly in the park, and the lava fields offer little shade.
Why This Hike Is Worth It
The Mauna Ulu hike gives visitors a close look at one of Kīlauea’s most important eruptions. It is more than a scenic walk. It is a chance to stand on land that formed only decades ago and see how volcanoes continue to shape Hawaiʻi Island.