lava, flows, eastern, flank, kilauea, volcano, in, puna, island, this, aerial, photo, shot, thursday, feet, open, channel, was, feeding, flow, that, had, merged, with, another, both, were, advancing, along, southern, edge, previous, hawaiian, observatory, said, friday, erupts, from, fissure, flanks, s, pu, u, o, vent, pools, snakes, across, hawaii, fed, by, eruption, sept, fissures