Teide, Tenerife
Here we have a volcano that defines an entire island -- Teide on Tenerife in the Canary Islands. Like Kilauea on Hawai'i, Teide is a hotspot-related volcano. However, unlike Kilauea, Teide has much more of a history of explosive eruptions, with a large summit caldera. The clouds in this image are clearly related to elevation, as they follow the same topographic line around the entire island, with the main edifice of Teide soaring over the thin clouds.
Image: Courtesy of the Image Science & Analysis Laboratory, NASA Johnson Space Center / Taken June 5, 2009.