Kilauea volcano's eruption intensifies, with lava fountains peaking at 1,000 feet and concerns over air quality rising.

Kilauea began continuously releasing lava from its summit caldera inside Hawaii Volcanoes National Park on Wednesday morning after a weeklong pause, the U.S. Geological Survey said. The molten rock was contained within the park and wasn't threatening residential areas.

Hawaii’s Kilauea volcano shot lava as high as 1,000 feet (300 metres) into the air during its most recent eruptive episode, geologists said. The tall fountain of molten rock drew people to the Hawaii Volcanoes National Park to check out the spectacle, including some on horseback.