Sami was frantically waving a flashlight.

You strap it onto your forehead, so you can see the reflection in the eyes of the animal. So, if you go out at night, you shine a flashlight, the animals are bright.

Instead of looking at reproductions of it at home, you're actually feeling the hand laid bricks and shimmying up and down narrow cracks and getting wet and muddy and walking in a dark tunnel with a flashlight.