An explosion sent rocks and debris rushing through the air and roof of the tourist vessel.
A torrent bomb struck a tour boat in Hawaii, leaving 23 persons injured. The torrent is from Hawaii’s Kilauea volcano which ensued in May and has been spouting out gas and molten rock since then.
Authorities are investigating as a passenger broke a leg leaving others with burns.
The explosion left a broad hole in the roof of the tour boat which has been used to convey visitors out to view the torrent plunging into the sea.
Officials have warned of the dangers of toxic fumes, created when molten rock hits the sea and forms hazardous clouds containing hydrochloric acid and glass particles.
Kilauea is one of the world’s most active volcanoes, and its eruption has destroyed hundreds of homes and forced thousands to evacuate.
Hawaii County fire department battalion chief Darwin Okinaka told Reuters the boat had returned to port under its own power, and three of the injured were taken away by ambulance.
Rules prohibit ships from getting any closer than 300m to a torrent flow entering the sea, although a coastguard spokesperson told Reuter’s news agency that experienced boat operators had received special approval to get far closer.