Open-faced cocinas burn continuously - for food and often as the day's only warmth.
They also coat the walls in soot, the lungs in it too. Glaucoma. Respiratory disease. The kitchen, long the seat of women's authority in the Andes, doubles as the thing slowly damaging them.

The young woman in the foreground works inside that smoke, inside the black carbon.

Behind her, her grandmother tends a cocina mejorada - an improved stove, designed by her granddaughter
and other young women across the Sacred Valley to keep the heat while taking away the harm.