In modern times it's hard sometimes to find darkness, but go on a cave out our in a woodland on a dark night: pitch black. I'm in a city and walked down a side

In modern times it's hard sometimes to find darkness, but go on a cave out our in a woodland on a dark night: pitch black. I'm in a city and walked down a side lane at night (new moon) and it was so dark I couldn't see my feet. It's the contrast (seeing black next to light colours) that's not natural - but, I'm not sure how relevant that is.