http://www.sciencemag.org/news/2018/07/oven-was-used-make-bread-thousands-years-agriculture

Hunter-gatherers from the Natufian culture baked an early form of bread in this 14,000-year-old fireplace in northeastern Jordan.

Jordanian volunteer Ali Shokaiteer (left) and lead author of the study Amaia Arranz-Otaegui take samples from local cereal grains.