Lava Tree State Monument is a free, 17-acre park in the Puna District of Big Island, near Pāhoa. Its main draw is a grove of hollow lava molds left around ʻōhiʻa tree trunks by a 1790 lava flow. A 0.7-mile loop passes the formations and tropical plants, with plaques explaining how the molds formed. The mostly paved, easy path suits a relaxed walk, and picnic tables make the park a useful pause on a drive through the area.
How the lava trees formed
The hollow columns in the park preserve the shapes of ʻōhiʻa trees that once grew here. In 1790, pāhoehoe lava moved through the forest and surrounded the trunks. The lava cooled and hardened against them; the trees burned away, leaving hollow casts behind.
Some columns still show impressions of tree bark. Set among ferns and tropical regrowth, they make the process visible: the lava took the shape of the trunks before the wood disappeared. Plaques along the path explain the geology and history of the formations.
Walking the loop
The 0.7-mile Lava Trees Loop Trail is mostly paved and relatively flat, with a couple of gentle rises near the end. It is a self-guided walk, and the interpretive plaques provide context as you go. Allow 20 to 60 minutes depending on your pace.
Parts of the route are described as suitable for wheelchair access, but surfaces can be uneven. The park also has restrooms, picnic tables and covered shelters, so you can take a break before continuing through the Puna area.
FAQ
Is Lava Tree State Monument free to visit?
Yes. The park is free to visit.
How long does the Lava Trees Loop take?
The 0.7-mile loop takes about 20 to 60 minutes, depending on your pace. Allow around an hour for a relaxed visit.
Is the trail wheelchair accessible?
Parts of the mostly paved path are described as wheelchair accessible, though some surfaces can be uneven.
What will I see at the park?
The trail passes hollow lava casts formed around ʻōhiʻa trees during a 1790 lava flow, along with tropical plants and plaques explaining the geology.
