Global Volcanism Program | Image GVP-09423
A small steam-and-ash eruption on December 10, 1952 took place from the moat between the inner (dark-colored) and outer lava domes in the summit crater of Bárcena. A lava dome was first observed on September 20, when it was about 8 m high and 55 m wide. On November 15 the dome was observed to fill about half of the 700-m-wide crater. At the time of this photo, an older outer dome littered with breadcrust bombs and ejecta surrounded the freshly extruded inner dome.
Photo by L.W. Walker, 1952 (courtesy of Sherman Neuschel, U.S. Geological Survey).