image: Cross-section of a layered carbonate deposit from the Barbegal mill complex. This carbonate formed layer-after-layer on a square piece of wood of the mill wheel, the impression of which can be seen below. The wood decayed, leaving the cast as a record of the mill's history. This material relates to a paper that appeared in the Sep. 5th 2018, issue of Science Advances, published by AAAS. The paper, by G. Sürmelihindi at Johannes Gutenberg University in Mainz, Germany, and colleagues was titled, "The second century CE Roman watermills of Barbegal: Unraveling the enigma of one of the oldest industrial complexes." view more
Credit: [Credit: Copyright Cees Passchier, Mainz, Germany]