Active lava delta on the south coast of Kīlauea, Hawai‘i

Active lava delta at East Lae‘apuki on the south coast of Kīlauea Volcano. White gas plume (right) marks location of lava entering the sea through a lava tube whose location is shown by blueish fume (left and center). In early August 2005, the delta encompassed an area of about 12 hectares (30 acres). On August 27, about 4.5 hectares (11 acres) of the delta collapsed into the sea, leaving a scar about 460 m (1,510 ft) long and 150 m (490 ft)wide. The collapse triggered waves that sent boulders as large as 1 m in diameter (3.3 ft.) onto the surviving delta.