Kilauea, the most active volcano on Hawaii's Big Island, erupted and began spewing lava on Wednesday after a three-month pause.
The US Geological Survey's Hawaiian Volcano Observatory noticed a glow in a webcam at Kilauea's summit early in the morning before fissures opened up.
The observatory said the lava was confined to the crater floor.
The Hawaii Volcanoes National Park, where Kilauea is located, said it was expecting large numbers of people to view the eruption.
Scientists at the observatory said that they were monitoring the eruption but that no communities on the island were currently at risk.
Locations:
Hawaii, Kilauea