April 21, 2023 — A view along the floor of Halema‘uma‘u crater in Kaluapele (Kīlauea caldera)

A morning view of the floor of Halema‘uma‘u, captured by Hawaiian Volcano Observatory geologists during a sampling mission on April 21, 2023. Although the volcano was not erupting when this image was taken, a wispy plume can still be seen rising from the crater floor. Kīlauea summit sulfur dioxide (SO₂) emission rates remain low and were most recently measured on April 14 at 110 tonnes per day. USGS image by L. Gallant.