Reykjadalur means “Steam Valley"—a perfectly apt description of this pleasant geothermal area close to the town of Hveragerði, a 40-minute drive south from Reykjavík. Formed from a now extinct volcano (Mount Hengill), the valley is best experienced via a two-mile walk along a gravel road, which leads into the hot springs. The hour-long stroll—fairly easy but quite narrow in places—is highly photogenic thanks to the presence of boreholes, waterfalls, and springs, so bring your camera as well as your swimming gear. Be sure also to use only the official bathing pools, since although the light-blue water may look innocent, some pools are hot enough to cause severe burns. If you don’t have a car to get to the site, you can visit the springs via an official tour, which can be done in combination with some horse riding. There is also a restaurant close to the parking lots and bathrooms.

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