During 21-27 June, lava from Kilauea continued to flow off of a lava delta into the ocean at the East Lae`apuki entry. On 24 June, lava that flowed over a 67 m wide sea cliff was fed from a breakout point about 50 m inland from the cliff on the W surface of the delta. The area of East Lae`apuki lava delta was estimated to be 20.5 hectares. On 24 June, the floor of Drainhole vent in Pu`u `O`o's crater collapsed and produced a 30 m by 25 m lava pond with dynamically active lava on the SE side of the pit. Lava from the Campout flow and tube, located on the E margin of the PKK shield, advanced 1.2 km towards the Pulama pali approximately during 19-24 June.

Geological Summary. Kilauea overlaps the E flank of the massive Mauna Loa shield volcano in the island of Hawaii. Eruptions are prominent in Polynesian legends; written documentation since 1820 records frequent summit and flank lava flow eruptions interspersed with periods of long-term lava lake activity at Halemaumau crater in the summit caldera until 1924. The 3 x 5 km caldera was formed in several stages about 1,500 years ago and during the 18th century; eruptions have also originated from the lengthy East and Southwest rift zones, which extend to the ocean in both directions. About 90% of the surface of the basaltic shield volcano is formed of lava flows less than about 1,100 years old; 70% of the surface is younger than 600 years. The long-term eruption from the East rift zone between 1983 and 2018 produced lava flows covering more than 100 km2, destroyed hundreds of houses, and added new coastline.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)