April 21 - Halema‘uma‘u crater

A view of Halema‘uma‘u crater at the summit of Kīlauea Volcano, Island of Hawai‘i, showing the active western fissure with rising fumes, the active western portion of the lava lake (lighter colored area in the middle of the photo), and the big island within the lava lake (right). Lava continues to enter the active lava lake and currently has an effusion rate of less than one cubic meters per second (<1 m3/s). This photograph was taken on April 21, 2021, at 11:49 a.m. HST from the south rim of Halema‘uma‘u, an area within Hawai‘i Volcanoes National Park that remains closed to the public due to safety reasons. USGS photo by J.M. Chang.