Overflight of Halema‘uma‘u crater—Kīlauea summit Feb. 1

An aerial view of Halema‘uma‘u crater from the northeast during a helicopter overflight of the Kīlauea summit eruption on February 1. The dull black color on the eastern (lower left) portion of the lava lake is the inactive surface. The more reflective silver surface is the western (upper right) active portion of the lava lake, with the gas plume marking the location of the west vent. The perched rim is visible along the perimeter of the lake. Many small islands remain in the inactive half of the lake, with only the main island located in the active half of the lava lake. UGSS photo taken by B. Carr.