Rhoo crawled across the cavern floor to look out over the cliff. She spotted movement down below, in the trees. Someone, something was moving  down there. Curiosity sparked, and she watched intently to get a better glimpse of the creature. It was moving slowly enough, though still at a rather brisk pace. To her surprise, it started scaling up her side of the mountain.

Naturally, she backed up a bit, waiting for the creature to arrive.