Jae C. Hong / AP
In this May 20, 2018, file photo, people watch a plume of steam as lava enters the ocean near Pahoa, Hawaii. Officials say an explosion sent lava flying through the roof of a tour boat off the Big Island, Monday, July 16, 2018, injuring at least 13 people. The people were aboard a tour boat that takes visitors to see lava from an erupting volcano plunge into the ocean.
Monday, July 16, 2018 | 2:34 p.m.
HONOLULU — An explosion sent lava crashing through the roof of a tour boat off Hawaii's Big Island, injuring 23 people Monday, officials said.
A woman in her 20s was in serious condition with a broken thigh bone, the Hawaii County Fire Department said. Three others were in stable condition at a hospital with unspecified injuries. The rest of the passengers suffered burns, scrapes and other superficial injuries.
They were aboard a tour boat that takes visitors to see lava plunging into the ocean from a volcano that has been erupting for two months. Firefighters said the lava punctured the boat's roof, leaving a gaping hole.
Officials have warned of the danger of getting close to lava entering the ocean, saying the interaction can create clouds of acid and fine glass. Beside the hazards, several companies operate such tours.
The U.S. Coast Guard in May instituted a safety zone where lava flows into the ocean off the Big Island. It prohibits vessels from getting closer than 984 feet (300 meters) from ocean-entry points.
The agency allows experienced boat operators to apply for a special license to get up to 164 feet (50 meters) from where lava sizzles into the sea.
The molten rock is coming from the Kilauea volcano, which has been erupting from a rural residential area since early May and has destroyed more than 700 homes. But until now, the only serious injury was to a man who was hit by flying lava that broke his leg.
Officials were interviewing injured passengers at a hospital.
