Halemaʻumaʻu crater and lava lake profile

This plot shows the elevation of Halemaʻumaʻu crater along a line running from west (left) to east (right). The pre-2018 collapse line (blue) shows the relatively shallow depth of Halemaʻumaʻu during the lava lake period of 2008–2018. The post-collapse (2019) elevation line is black, showing that 500 m (1640 ft) of collapse occurred during the 2018 eruption. The eruption which began in December 2020 created a lava lake that reached a depth of 226 m (740 ft) by May 2021 (green line). The current eruption has caused the lake surface to rise another 60 m (200 ft) and overflow a down-dropped block (red line). USGS figure.