October 22, 2026—Tephra hill during helicopter overflight of Halema‘uma‘u
October 22, 2026—Tephra hill during helicopter overflight of Halema‘uma‘uDuring a USGS Hawaiian Volcano Observatory helicopter overflight of Halema‘uma‘u crater, this close-up image was taken of the tephra hill on the southwest rim of Kaluapele (the Kīlauea summit caldera). This hill of tephra formed during the ongoing episodic summit eruption as tephra fallout from many high fountaining episodes accumulated here.