How does Elizabeth Peters use imagery in Crocodile on the Sandbank?

Example of Imagery:

"I retreated to my bed, but I did not sleep well the rest of the night. The first pale streaks of dawn found me wide awake, and I was glad to arise and dress. I had managed to convince myself that what I saw was a large animal of some kind, raised on its back legs as a cat or panther will rise; so the full horror of the night did not strike me until I stepped out onto the ledge, which was now illumined by the rising sun. As I did so, something crackled under my foot...It was the rotting bandage which had once wrapped an ancient mummy."