Special Sea Soak Ancient Sea Mineral Bath. Wonderful for skin, or relaxing tired or aching limbs in this very special mineral bath from ancient seas and let your worries float away. The body loves to nourish, cleanse and refresh itself in these salts. Let it absorb the minerals it chooses, while the salt pulls toxins out at the same time. Hundreds of metres below ground near Krakow in Poland lie the virgin salts of a fifteen million year old sea from the Miocene era, unpolluted by man and jam-packed with important minerals and trace elements. People stay in a spa 200 metres below ground in the Wieliczka salt mine to benefit their health.