Answer:
From the passage of "Lake Tititaca" :
They travel with their llamas. They see me, knitting their cheeks to contemplate me with their tiny eyes.
It refers that there was a connection between the characters and the llamas of the travelers.
Step-by-step explanation:
A metaphor is being used, "knitting their cheeks" does not mean the real connotation of the words. It refers to pay special attention.