A particular salt from an underground salt lake, situated along the River Murray River in the Murray Darling Basin, Victoria Mildura, Australia. The area was 5 million years ago, an inland sea. Through the centuries, the inland sea and sunk become embedded in a clay soil rich in minerals. At about 45 meters depth there are still salt lakes. The salt water is pumped into natural base evaporated by the sun. Carotene makes the pink color.