Dust, bird droppings and soot were carefully removed from sandstone reliefs, where remains of ancient artwork began to peer ...
What’s probably never imagined is having to clear away centuries of bird poop. Yes, the same challenge that faces most of us ...
How cool that I’d discovered them now! I could witness the miracle of life right on our doorstep. I could set up a streaming camera! That idea might have been my first mistake. Or maybe it was ...