Seneca. To hear them tell it, that Diamond Head was a 1970s heaven-on-earth. Named for the dormant volcano on the island of O’ahu in Hawaii, Diamond Head opened in 1975 as a Polynesian ...

But it's not just the size of Vatnajökull that makes it remarkable: beneath its glassy surface lies seven active volcanoes ... a bit further and you'll find Diamond Beach, named for the chunks ...