Aerial oblique view of Pu`u `O`o cinder-and-spatter cone

Aerial oblique view of Pu`u `O`o cinder-and-spatter cone, looking west-southwest. Visible in foreground are crater overflows that occurred chiefly in 1997. Main crater floor lies 30-40 m below the east rim. The feature known as "crater vent" is the heavily fuming area in upper left of crater floor; it forms a shallow depression about 100 m long within the crater floor. Only scant fresh lava was visible in the crater vent when this photo (p0910) was taken February 12, 1998. Distance across crater is about 200 m (left to right).