The Great Crack is an , and fissure in the island , in the district of Kau . According to the United States Geological Survey ( USGS ) , the Great Crack is the result of crustal dilation from magmatic intrusions into the southwest rift zone of Kilauea . While neither the earthquake of 1868 nor that of 1975 caused a measurable change in the Great Crack , lava welled out of the lower of the Great Crack in 1823
earthquake of 1868
1868 Hawaii earthquake
Hawaii (island)