A telephoto lens captured the cascade of lava streaming from the lava tube. Hot lava mixing with cool seawater produces an explosive interaction that results in fragmented lava—spatter, Pele’s hair, and black sand—flying upward, landing on the sea cliff above the ocean entry and being thrown seaward. These fragments pose a hazard to anyone who ventures too close to the ocean entry by land or by sea. Photo taken Tuesday, January 3, 2017 courtesy of USGS/HVO