North Iceland is a region of vast natural wonders from extensive geothermal activity (see Namaskard Gallery) and volcanoes (Iceland sits atop the Mid-Atlantic Ridge), to voluminous waterfalls (see Dettifoss, Selfoss, Godafoss, and Hafragilsfoss Galleries), to must-see canyons (Jokulsargljufur), rivers (Jokulsa a Fjollum and Skjalfandafljot), and lakes (Ljosavatn and Myvatn), to dramatic lava formations (see Dimmuborgir Gallery).