This Oct. 25, 2014 photo provided by the U.S. Geological Survey shows a Hawaii Volcano Observatory geologist standing on a partly cooled section of lava flow near the town of Pahoa on the Big Island of Hawaii. Note the thin red horizontal line of molten lava visible along the bottom third of the photo. The flow here is about one meter (three feet) thick, but slightly farther upslope where the lava has had more time to inflate the thickness was closer to two meters. Dozens of residents in this rural area of Hawaii were placed on alert as flowing lava continued to advance. Authorities on Sunday, Oct. 26, 2014 said lava had advanced about 250 yards since Saturday morning and was moving at the rate of about 10 to 15 yards an hour, consistent with its advancement in recent days. The flow front passed through a predominantly Buddhist cemetery, covering grave sites in the mostly rural region of Puna, and was roughly a half-mile from Pahoa Village Road, the main street of Pahoa. (AP Photo/U.S. Geological Survey)