Teacher Cleaning Chalk Dust in Brazzaville Hall

Late-study lamplight spills across the polished wooden floor of a lecture hall in Brazzaville, illuminating dust motes that hang suspended in the humid air. A teacher stands near a row of empty desks, their hands raised as they rub chalk dust from their fingertips, a fine white powder clinging to their skin and darkening the creases of their palms. High windows reveal the deep blue of the wet season night, casting cool, diffuse light that contrasts with the warm, yellow glow of the overhead fixtures. The room is vast and empty, lined with rows of sturdy wooden benches that stretch into the shadows. A faint sheen of moisture coats the window glass, blurring the darkness outside while the teacher's focused posture remains sharp against the quiet, studious silence of the space. The white dust settles in soft patches on the dark wood of the desk edge.