Lava Tree State Monument is 3 mi. s.e. off Pāhoa-Pohoiki Rd. (Hwy. 132) in Nānāwale Forest Reserve. Around 1790 an eruption from Kīlauea volcano engulfed a grove of ‘ōhi‘a trees in lava. The moisture in the tree trunks chilled and hardened the lava into a rigid shell where each tree stood. The flow of lava then ceased, and the molten portions drained away, leaving the tree molds. A .7-mile loop trail provides views of the lava trees.