The volcanic units of Ile de la Possession largely formed between around 5 and 0.5 million years ago, shown in this 30 March 2019 Sentinel-2 satellite image (N is at the top). The island is part of the Crozet Archipelago and has been through five main cycles of eruptive activity and erosion including glacial valley formation. More recently, scoria cones and lava flows formed, as well as the collapse of part of the western flank.

Satellite image courtesy of Copernicus Sentinel Data, 2019.

This image is made available under the Creative Commons BY-SA 4.0 license terms.

Île de la Possession