Female young tourist bathing in thermal water of Blue Lagoon in Iceland

female young tourist bathing thermal water blue lagoon spa iceland happy smiling woman relaxing wellness caucasian girl geothermal skin treatment female tourist beauty health self care hot lake thermal heat sulfur vapor lifestyle wealthy vacation holiday chill calm turquoise lake tourist attraction serenity myvatn landmark therapy model nordic outside winter icelandic natural pool steam spring tourism warm volcanic swimsuit people in iceland cold fun adult leisure activity basalt rock scenic mineral pool