Lava still cooling in Puna: ‘We’re about halfway there’

This map from the Hawaiian Volcano Observatory shows the thickness of lava across the eruption area. The thickest areas are located where lava entered the ocean and built new land. Thicker lava flows insulate heat more easily and take longer to cool. (This map does not show temperature.)

Kelsey Walling/Tribune-Herald Highway 132 runs through lava damage in Puna on Friday. Lava has transformed Puna since the eruption of Kilauea.

Two years after the start of the Kilauea eruption in lower Puna, lava from the eruption is still estimated to be only half-cooled.