Global Volcanism Program | Image GVP-03713
An aerial view from the east shows a weak plume from the 1991 summit dome and the geothermal area directly east of the dome in the 1987 vent. The lighter deposits in center of the photo are hydrothermally altered, forming a highly unstable area similar to those that collapsed to the south on 16 April.
Photo by Claus Siebe, 1991 (Universidad Nacional Autónoma de México).
This image is made available under the Creative Commons BY-NC-ND 4.0 license terms.