Hiking boots and swimsuits are de rigueur accessories when you explore Landmannalaugar in the highlands of Iceland, near the Hekla volcano. With mountains that glitter in gem tones (think obsidian to sapphire to topaz), abundant hot springs that await your plunge, rough-hewn hiking huts, sprawling lava fields and scenic glacial valleys, this popular area for outdoor enthusiasts begs you to explore its diverse geological wonders for a day or even weeks. Best hike: Traipse up Bláhnjúkur, a 3,084-foot-high “Blue Mountain” from which you can spot 5 glaciers on a clear day.
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