The Pitons, the dramatic landmarks of the island of St. Lucia, are the eroded plugs of two Pleistocene lava domes. Gros Piton (left) and the even steeper Petit Piton (right) are pre-caldera lava domes west and SW of the late-Pleistocene Qualibou caldera. The lower ridge in the right foreground is the SW-most of the 3 Bois d'Indie Franciou andesitic lava domes. They were constructed along a NE-trending fault.

Photo by Lee Siebert, 1991 (Smithsonian Institution).

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

Qualibou