Britain's oldest SALT production site is 5,800 years old and was found in Yorkshire

Daily Mail

Located near Loftus, a small village north of the Yorkshire Moors, the site was in use around 5,800 years ago during the early Neolithic Age. https://www.dailymail.co.uk/sciencetech/article-9419219/Britains-oldest-SALT-production-site-5-800-years-old-Yorkshire.html?ns_mchannel=rss&ns_campaign=1490&ito=1490