Hawaii volcano 'not safe' to roast marshmallows over, USGS says

Hawaii: Kilauea volcano erupts again, spews ash up to 12,000 feet

"We're going to have to say no, that's not safe".

Magma has drained from Kilauea's summit lava lake and flowed 40km east underground, bursting out of about two dozen giant cracks or fissures near the plant.

Rivers of lava flowed toward the ocean on Hawaii's Big Island over the weekend, forcing officials to knock on doors and urge residents holding out in two evacuated neighbourhoods to flee right away.

On Monday, U.S. Geological Survey (USGS) explained on Twitter that roasting marshmallows over scorching, molten rock is not a great idea for a multitude of reasons.

"Kind of disturbingly, some people just refused to leave", said Hawaii County Civil Defense Administrator Talmadge Magno.

The agency warned that ash was drifting northwest and liable to dust anyone in the summit area.

Since 1823 Kilauea has seen 61 separate eruptions, making it one of the most active volcanoes on the planet. Officials said it wasn't strong enough to generate a tsunami.

Operator Ormat Technologies Inc last week said there was no above-ground damage to the plant but it would have to wait until the situation stabilised to assess the impact of earthquakes and lava flows.

The lava flow originated from Fissure 8, and began advancing rapidly to the northeast from near Kahukai road before 4 a.m. HST, the USGS Hawaiian Volcano Observatory reported.

So far no deaths have been blamed on the eruption, though a man's leg was shattered when he was hit by a plate-size chunk of lava rock.

Residents fear the wells may be explosive.

While eruptions continue at the main crater, Kilauea's lava flows have also proven extremely risky for bystanders and residents who refused to evacuate.

The latest series of explosions come during the fourth week of what geologists rank as one of the biggest eruption cycles from Hawaii island in a century, reported Reuters.