Lava tour guide killed by noxious steam in Kalapana area

A hiker died Thursday while viewing lava in lower Puna. Both county helicopters were reportedly dispatched to the scene, as were county fire paramedics and police. (HOLLYN JOHNSON/Tribune-Herald)

Rain falling on a lava flow in the Kalapana lava viewing area Thursday morning caused a noxious steam cloud that overcame four people hiking on a guided tour, according to the Hawaii Fire Department.