Gesaltza Añana

This is a valley full of salt pans as the river here comes through an ancient lake bed that dried out and buried in the Jurassic period. The river is much more salty than the oceans so extracting the salt is much quicker and more efficient. Salt has been extracted here since before  the Romans. The compex aqueducts and flow control is quite ingenious, bringing the salt water, first into holding tanks to settle out dirt etc,  and then onto the salt floors for evaporation. The whole stucture is made out of wood. Wooden aqueducts, wooden platforms, wooden walkways, all held together with wooden pegs.  Any iron or steel would, of course rust very quickly in the salt laden atmosphere. There is so much salt arrount it looks as if has been snowing. The holding tanks have brine shrimp living in them.
We went on a guided tour in French as the English language tour was not until 13.00. I manage to get he gist of what she was saying, so better than a Spanish language tour.
Off to Camping Angosto.