Mauna Ulu lava flows in Big Island Hawaii
1213642177

Mauna Ulu

Hawaiʻi Volcanoes National Park


In 1969, eruptions from Kilauea's East Rift Zone began building a new lava shield, Mauna Ulu (Growing Mountain). By the time the flow stopped in 1974, it had covered 10,000 acres of park and added 200 acres of new coastal land. It also buried a 6-mile section of the original Chain of Craters Road in lava up to 300ft deep. Today the signed turnoff for Mauna Ulu is 3.5 miles down Chain of Craters Road.

The Puʻu Huluhulu Trail and its continuation, the more demanding Napau Crater Trail begin here.


Lonely Planet's must-see attractions

Nearby Hawaiʻi Volcanoes National Park attractions

1. ʻAlae Lava Shield

0.5 MILES

The once-awesome ʻAlae crater did not go easily. The Mauna Ulu eruption had just filled the 1440ft-wide and 540ft-deep crater with a lake of molten lava…

2. Makaopuhi Crater

2.2 MILES

This jaw-dropping, mile-long crater is the largest in the East Rift Zone. Although once accessible by road, it's now 5 miles along the Napau Crater Trail,…

3. Old Pulu Factory

3.13 MILES

Ancient Hawaiians used pulu, the golden, silky fibers found at the base of hapuʻu (tree fern) fiddleheads, to dress wounds and embalm the dead. In the…

4. Thurston Lava Tube

4 MILES

On Kilauea's eastern side, Crater Rim Dr passes through a rainforest thick with tree ferns and ohia trees to the overflowing parking lot for ever-popular…

5. Kealakomo

4.29 MILES

About halfway along Chain of Craters Road is this coastal lookout (elevation 2000ft), with picnic tables and commanding views. That inky black snake's…

6. Kilauea Iki Overlook

4.31 MILES

When 'Little Kilauea' burst open in a fiery inferno in November 1959, it filled the crater with a roiling lake of molten rock fed by a 1900ft fountain…

7. Hawaiʻi Volcanoes National Park

4.31 MILES

Even among Hawaii's many wonders, this national park stands out. Its two active volcanoes testify to the ongoing birth of the islands: quiet Mauna Loa (13…

8. Puʻu Puaʻi Overlook

4.39 MILES

Pu'u Pua'i (Gushing Hill) formed when cinder and ash spewing from the 1959 Kilauea Iki fountain was carried southwest on the wind, piling on the rim and…