Published November 14, 2014 at 500 × 329 in Ancient shellfish remains rewrite 10,000-year history of El Niño cycles A large shell midden from the Inca period in Peru’s Ica valley. The climate here is so dry that even wooden structures are preserved. Image credit: M. Carre / Univ. of Montpellier (Visited 10 times, 1 visits today)