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Kīlauea summit eruption within Halemaʻumaʻu crater—October 1, 2021

Detailed Description

The growing lava lake within Halemaʻumaʻu, at the summit of Kīlauea, has risen roughly 27 m (89 ft) since the eruption started on September 29, 2021 at 3:21 p.m. HST. The eruption began with a fissure opening along the floor of Halemaʻumaʻu, through the surface of the solidified 2020–21 lava lake. This fissure produced a line of lava fountains—many of which have been drowned by the deepening lava lake—with only a few low fountains still visible on the central and south-central lake surface (center and center-left of image). The fissure that opened in the western crater wall—around 4:40 p.m. on September 29—is visible on the far side of the lava lake. USGS photo taken by L. DeSmither at approximately 10:00 a.m. on October 1, 2021.

Sources/Usage

Public Domain.