The steep-sided lava dome at the left is Aileron, which was formed about 9700 years ago. The back side of the dome was cut by the latest of three major edifice-collapse events at Mount Pelée. The eastern rim of l'Etang Sec, the current summit crater, cuts horizontally across the photo at the upper right in front of the 1929 dome on the right horizon.

Photo by Lee Siebert, 2002 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Pelée