Global Volcanism Program | Image GVP-09423
A small eruption on 10 December 1952 took place from the moat between the inner (dark-colored) and outer lava domes in the Bárcena summit crater. A lava dome was first observed on 20 September, when it was about 8 m high and 55 m wide. On 15 November 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 new inner dome.
Photo by L.W. Walker, 1952 (courtesy of Sherman Neuschel, U.S. Geological Survey).
This image is made available as a Public Domain Work, but proper attribution is appreciated.