East of Reykjavik, Iceland lies the mountain, Hengill. 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, t (Cool Pictures Travel)
Havasu Falls – Grand Canyon Arizona – USA: Three major cascades at Havasu Creek create a landscape that is both beautiful and entertaining. At the base of these falls, one of which is Havasu Falls, is a travertine pool filled with cold turquoise water.