Turpin, who has captained lava tour boats for many years and has lived on the Big Island since 1983, said there were no warning signs prior to the blast.
One woman was in serious condition with a fractured femur. The other wounded passengers were being treated for burns and scrapes.
Officials were interviewing injured passengers at a hospital.
Some 6,100 acres have been covered in lava according to the United States Geological Survey, including areas where homes once stood. We didn't see it'.
Kilauea has opened 14 lava-and-gas spewing fissures in total Lava flows over a road in the Puna District as a result of the eruption from Kilauea on Hawaii's Big Island. The lava entering the ocean at Kamukona hit a steep slope, and was quickly carried down to deeper parts of the ocean, said Babb.
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That would pave the way for the entire city to come under government control in accordance with the handover deal. In the south, opposition groups remain in Quneitra province, which borders the Israeli-occupied Golan Heights.
Lava flowing into the Pacific is a spectacular sight, producing a foggy haze known in Hawaii as "laze". While scientists are calling the lava-based structure an island, they believe it could possibly be a "submarine tumulus" which built up underwater and emerged above sea level.
Although still engaging in some curious volcanological behavior, Kilauea's not making global headlines anymore, partly because its eruption has somewhat settled into a consistent pattern.
There are strict limits over access to the lava on land for safety reasons, making boat and helicopter tours the only options people have to witness the volcanic spectacle in person.
The Safety Zone encompasses all waters extending 300 meters (984 feet) in all directions around all entry points of lava flow into the ocean. The most serious injury was a traumatic leg injury suffered by a 20-year-old woman.
Officials have warned that getting too close to lava entering the ocean risks exposure to breathing in toxic fumes and even fine glass particles.
Kapoho is now uninhabited after much of the town was destroyed by an earlier eruption in early June.