The sun reaches the boulder fields near Lauca before it warms the air. A southern viscacha sits on a rock with its paws tucked close and its long tail draped behind it, facing the light like an old resident of the mountain who knows exactly when the cold will loosen its grip.
Around it, the colony wakes in pieces. One animal stretches. Another gives a sharp whistle and disappears between stones. Their bodies have the loose, rounded look of rest, but the illusion ends when they leap. A viscacha crosses gaps with quick certainty, landing on narrow shelves, turning in midair, using its tail as a counterweight against the broken geometry of the Andes. They feed, groom, and sun themselves near shelter, never far from a crack deep enough to save them. In a place where cover is scarce, the colony survives by watching together.
Their ledges support more than their own kind. Predators read these slopes with care, and the movement of viscachas shapes where hunters wait, where plants are clipped, where alarm travels. As warming shifts snowlines and people push deeper into high country, even rock dwellers find change arriving at the den mouth. Still, each morning, the first body on the stone receives the sun for all the others.