Towering lava fountains of Hawaii's Kilauea volcano trigger park and highway closures

The latest lava fountaining episode of an erupting Hawaii volcano reached 1,000 feet high Tuesday, prompting temporary closures at a national park.

HONOLULU — The latest lava fountaining episode of an erupting Hawaii volcano reached 1,000 feet high Tuesday, prompting temporary closures at a national park and part of an important highway because of falling glassy volcanic fragments, including ash.

Kilauea, on Hawaii’s Big Island, has been dazzling residents and visitors for more than year with an on-and-off eruption that periodically sends fountains of lava soaring into the sky.

The fountaining that began Tuesday morning marked the eruption’s 43rd episode since it began in December 2024. A livestream showed two fountains of bright-red lava and smoke. It’s unclear how long the fountaining will last. Some episodes have lasted a few days and others a few hours.

This image from video by the United States Geological Survey shows lava erupting from Kilauea volcano on Tuesday, March 10, 2026, in Hawaii Volcanoes National Park, Hawaii.USGS / via APLike other times, the molten rock was confined within Kilauea’s summit crater inside Hawaii Volcanoes National Park and hasn’t threatened homes or buildings.

But the lava fountains were creating trouble for neighboring communities and a highway where the volcanic fragments and ash, known as tephra, was falling. The tephra prompted temporary closures at the national park around the summit and a partial closure of Highway 11, an important route around the island, on either side of the park.