Hengill, Iceland - Hengill was formed from a Palagomite tuff, it is a central volcano and has a giant magma chamber beneath it. When thick basalt lava flows cool, they form hexagonal cracks, called columnar joints
A hidden wonder of the world - The "Valley of Love" in Ireland. almost a mile long, over half a mile high, and 3000 years older than the Pyramids. and this amazing link offers incredible image after image of "must experience" places.