Photo of the Day (Saturday 14 January 2012):
Frontera in the El Golfo valley is surrounded by steep rock faces, most likely the remains of an old volcanic crater rim. El Hierro, Canary islands (Photo: Janka)
More on VolcanoDiscovery:
: Our sister company on Hawai'i offers award-winning small group or private, customized tours on Kilauea volcano.
: Watch volcanoes live: our free interactive webcam and online data viewer tool