Smokin'
"In a mud pool at the sea salt mines near Bourgas, Bulgaria locals gather. He applies the mud from the pool and then stands upright until it is dry only to take a dip in the nearby sea. Afterwards he gets a relaxing swim in the 30cm of water in the salt mine (80-90% pure salt)." Photo and caption by Antoni Georgiev (source of National Geographic's Photo of the Month)
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