Flows on coastal plain and activity in Pu‘u ‘Ō‘ō

This view towards the southeast shows the vent area and upper lava tube system. In the lower right is Pu‘u ‘Ō‘ō crater, with a small circular lava lake in the northeast portion of the crater floor. Just to the left of this lava lake, outside of the crater on the eastern spillway, is the area of the September 21, 2011, fissure which is now the vent for the Peace Day flow. The vent area, now covered in lava, is the start of the lava tube, whose subsurface path is marked by the many sources of white fume.