This thermal image looks west at the June 27th flow front. The act...

This thermal image looks west at the June 27th flow front. The active tip of the flow is at the right side of the image, moving north. Lava issued from several spots along a deep ground crack, which has been traced with the dotted line in the left portion of the image. In addition, lava was filling another crack, also marked, closer to the active tip of the flow.