A vast jade plaster vault fills the frame, one round aperture open to the sky at its crown and shallow steps curving up the inner wall beneath it. Smooth lime render with no texture. One figure alone in black stands on the steps, tiny. The whole volume flooded in its own bounced colour. one dominant saturated colour across the mass, the whole volume flooded in its own bounced colour, no cast shadow, form read through subtle value shifts only, no grain