Guided tours of Puapoo lava tube offered

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Visitors to Hawaii Volcanoes National Park during its centennial year can reserve a guided hike into a large lava tube formed by Kilauea volcano centuries ago.

Visitors to Hawaii Volcanoes National Park during its centennial year can reserve a guided hike into a large lava tube formed by Kilauea volcano centuries ago.

Starting Wednesday, the park or its nonprofit partner, the Friends of Hawaii Volcanoes National Park, will offer weekly guided hikes into Puapoo lava tube by reservation only. The adventure is limited to 12 people, ages 7 and and older. Reservations must be made at least one week in advance.

Ranger-guided treks of Puapoo last about three hours and cost $30 per adult and $25 for youth 7 to 12. Proceeds support the park.

The challenging four-mile trek is not recommended for inexperienced or claustrophobic hikers. There is a 500-foot elevation change, and hikers must be able to climb down a 15-foot ladder into the lava tube, scramble up and over large rocks, and walk on uneven terrain with minimal light. Hikers will also have to walk in a crouched position for about 25 feet under a low ceiling. A helmet with headlamp, flashlight and gloves are provided.

Info and reservations: fhvnp.org.