Mara is seen with a different face in nearly every telling: a broad, weather-browned face to one traveler, a narrow one with deep-set eyes to another. In person, her features seem ordinary until a viewer looks away and tries to recall them. She moves with a deliberate sideways hitch, always favoring the mountain's uphill side, as if testing the slope before trusting it. Her most immediate and unexpected detail is that she keeps a tiny, carefully folded paper moth tucked beneath the bell's clapper, replacing it whenever the old one tears. The bell itself is dented and rubbed smooth at one small spot near its rim, where her thumb rests.

Mara is reserved with strangers but unexpectedly funny when a storm pins everyone down. She is tender toward the frightened and impatient with the boastful, yet her impatience often masks worry rather than contempt. She can be stubborn about old routes and fiercely practical about everything else. When she is alone, she speaks to the bell as if it were an old traveling companion.

Mara first appeared on the pass during the winter of the Split Cart, an event outsiders misremember as a bridge collapse. A supply cart broke through a snow shelf, and its driver, a child, and two pack animals were stranded above a ravine. A guide with a brass bell led a rescue party across a route no map recorded. Years later, a different-looking guide with the same bell brought a family through a blizzard. The stories multiplied, and so did the faces. Mara says she was once a living guide who died leading strangers out of a storm. The Afterkin she became is less a single body than a promise that keeps finding a face: travelers remember the guide they needed, while the bell carries the memory between them. She has since led three generations of travelers through the pass. Her closest ongoing tie is to the family of a former rescued child, now grown and running a mule train; their current leader, Brannoc, resents that Mara refuses to guide his reckless winter shortcut. Meanwhile, a survey crew has begun blasting a new road through the old route, threatening the paths and cairns that anchor her memory. Mara is trying to stop them without letting the pass claim another life.