No "potted" plants, Joel.
These are small pools of salty water. A natural salty water river, well, it isn't really a river, it's so flimsey - hey, KB - you can't call that a river... well, this flow of salty water runs down the mountains and the pools are made of this water. They let it evaporate and they take the salt from it. Salt mines...but not inside the mountains on in the sea. It's in Maras, in the Inca Sacred Valley, Peru. The Incas already took salt from this water centuries ago.