Some years ago, when fossicking with a tag-along party near Marble Bar, one member of the group spotted what looked like a speckled circular patch of lichen on a flat rock and was reaching out to touch it when I noticed that the "lichen" had a shrivelled up little tail. Following round from the tail I then saw that, in the centre of the circle, the "lichen" had a head. It was a small death adder, no thicker than a pencil all coiled up and was either basking in the sun or waiting for a bird to peck at its worm-like tail. I called a warning and the curious person leapt back. We touched the snake gently
with a long, long stick and it sprang into life and disappeared in a flash.
I had no idea that death adders could be so agile although I knew they can strike like lightning.
It reinforced my belief that you mustn't put your fingers anywhere that you can't see what you are touching.