In this Sept. 1 photo released by the U.S. Geological Survey, fluid lava streams from the June 27 lava flow from the Kilauea volcano in Pahoa, Hawaii.

Fluid lava streams rom the Kilauea volcano in Pahoa, Hawaii.

Molten rock moves to within a mile of Kaohe, prompting the Hawaiin Volcano Observatory to issue a warning to the community.

The Pu'u 'O'o crater of the Kilauea volcano partially obscured by thick fume from the June 27 lava flow near Pahoa, Hawaii.

In this August 29, 2014 photo released by the U.S. Geological Survey, fluid lava streams from the June 27 lava flow from the Kilauea volcano in Pahoa, Hawaii. The June 27 lava flow is named for the date it began erupting from a new vent.

A fluid lava stream within the main tube from the Kilauea volcano.