For more than 60 years, visitors walked through a cave in Spain without noticing hundreds of Ice Age engravings; archaeologists have now identified 280 motifs, making it one of Mediterranean Iberia’s largest art sites
(Image credit: Josep Maria Vergès Bosch and Míriam Salas-Altès/ via Cambridge.org) Not all art is exhibited or put on display. Some of it remains hidden in plain sight, etched into rock and can go unnoticed for centuries, even when people have been walking past them for decades. In a cave in Spain, hundreds of such…