Why did our ancestors make startling art in dark firelit caves?
Izzy Wisher writes: Charcoal drawings of stags, elegantly rendered in fluid lines, emerge under my torchlight as we squeeze through a tiny hidden entrance to a small chamber deep within Las Chimeneas cave in northern Spain. The chamber has space for just a couple of people, and certainly not standing, so we crouch on the cave floor and stare in awe at the depictions. Despite their remarkable freshness, they were drawn nearly 18,000 years ago. We sit in silence for…