Purple from Holy Temple objects traced to snail guts at 3,000-year-old Haifa factory

 https://www.timesofisrael.com/purple-from-holy-temple-objects-traced-to-snail-guts-at-3000-year-old-haifa-factory/

The true purple argaman dye and its associated azure techelet variant are mentioned dozens of times in the Hebrew Bible and Sennacherib’s Cylinder (690 BCE), among other texts.